Staging Environment: Content and features may be unstable or change without notice.
Search for vulnerabilities
Vulnerability details: VCID-6wps-kttd-rkhv
Vulnerability ID VCID-6wps-kttd-rkhv
Aliases CVE-2021-31812
GHSA-7grw-6pjh-jpc9
Summary Excessive Iteration In Apache PDFBox, a carefully crafted PDF file can trigger an infinite loop while loading the file.
Status Published
Exploitability 0.5
Weighted Severity 6.2
Risk 3.1
Affected and Fixed Packages Package Details
Weaknesses (4)
CWE-1035 OWASP Top Ten 2017 Category A9 - Using Components with Known Vulnerabilities
CWE-835 Loop with Unreachable Exit Condition ('Infinite Loop')
CWE-937 OWASP Top Ten 2013 Category A9 - Using Components with Known Vulnerabilities
CWE-834 Excessive Iteration
System Score Found at
cvssv3 5.5 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-31812.json
epss 0.00231 https://api.first.org/data/v1/epss?cve=CVE-2021-31812
cvssv3.1 5.5 https://lists.apache.org/thread.html/r132e9dbbe0ebdc08b39583d8be0a575fdba573d60a42d940228bceff@%3Cnotifications.ofbiz.apache.org%3E
generic_textual MODERATE https://lists.apache.org/thread.html/r132e9dbbe0ebdc08b39583d8be0a575fdba573d60a42d940228bceff@%3Cnotifications.ofbiz.apache.org%3E
cvssv3.1 5.5 https://lists.apache.org/thread.html/r143fd8445e0e778f4a85187bd79438630b96b8040e9401751fdb8aea@%3Ccommits.ofbiz.apache.org%3E
generic_textual MODERATE https://lists.apache.org/thread.html/r143fd8445e0e778f4a85187bd79438630b96b8040e9401751fdb8aea@%3Ccommits.ofbiz.apache.org%3E
cvssv3.1 5.5 https://lists.apache.org/thread.html/r179cc3b6822c167702ab35fe36093d5da4c99af44238c8a754c6860f@%3Ccommits.ofbiz.apache.org%3E
generic_textual MODERATE https://lists.apache.org/thread.html/r179cc3b6822c167702ab35fe36093d5da4c99af44238c8a754c6860f@%3Ccommits.ofbiz.apache.org%3E
cvssv3.1 5.5 https://lists.apache.org/thread.html/r2090789e4dcc2c87aacbd87d5f18e2d64dcb9f6eb7c47f5cf7d293cb@%3Cnotifications.ofbiz.apache.org%3E
generic_textual MODERATE https://lists.apache.org/thread.html/r2090789e4dcc2c87aacbd87d5f18e2d64dcb9f6eb7c47f5cf7d293cb@%3Cnotifications.ofbiz.apache.org%3E
cvssv3.1 5.5 https://lists.apache.org/thread.html/ra2ab0ce69ce8aaff0773b8c1036438387ce004c2afc6f066626e205e@%3Cusers.pdfbox.apache.org%3E
generic_textual MODERATE https://lists.apache.org/thread.html/ra2ab0ce69ce8aaff0773b8c1036438387ce004c2afc6f066626e205e@%3Cusers.pdfbox.apache.org%3E
cvssv3.1 5.5 https://lists.apache.org/thread.html/ra2ab0ce69ce8aaff0773b8c1036438387ce004c2afc6f066626e205e%40%3Cusers.pdfbox.apache.org%3E
generic_textual MODERATE https://lists.apache.org/thread.html/ra2ab0ce69ce8aaff0773b8c1036438387ce004c2afc6f066626e205e%40%3Cusers.pdfbox.apache.org%3E
cvssv3.1 5.5 https://lists.apache.org/thread.html/rd4b6db6c3b8ab3c70f1c3bbd725a40920896453ffc2744ade6afd9fb@%3Cnotifications.ofbiz.apache.org%3E
generic_textual MODERATE https://lists.apache.org/thread.html/rd4b6db6c3b8ab3c70f1c3bbd725a40920896453ffc2744ade6afd9fb@%3Cnotifications.ofbiz.apache.org%3E
cvssv3.1 5.5 https://lists.apache.org/thread.html/re0cacd3fb337cdf8469853913ed2b4ddd8f8bfc52ff0ddbe61c1dfba@%3Ccommits.ofbiz.apache.org%3E
generic_textual MODERATE https://lists.apache.org/thread.html/re0cacd3fb337cdf8469853913ed2b4ddd8f8bfc52ff0ddbe61c1dfba@%3Ccommits.ofbiz.apache.org%3E
cvssv3.1 5.5 https://lists.apache.org/thread.html/rf251f6c358087107f8c23473468b279d59d50a75db6b4768165c78d3@%3Cannounce.apache.org%3E
generic_textual MODERATE https://lists.apache.org/thread.html/rf251f6c358087107f8c23473468b279d59d50a75db6b4768165c78d3@%3Cannounce.apache.org%3E
cvssv3.1 5.5 https://lists.apache.org/thread.html/rfe26bcaba564deb505c32711ba68df7ec589797dcd96ff3389a8aaba@%3Cnotifications.ofbiz.apache.org%3E
generic_textual MODERATE https://lists.apache.org/thread.html/rfe26bcaba564deb505c32711ba68df7ec589797dcd96ff3389a8aaba@%3Cnotifications.ofbiz.apache.org%3E
cvssv3.1 5.5 https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/7HHWJRFXZ3PTKLJCOM7WJEYZFKFWMNSV
generic_textual MODERATE https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/7HHWJRFXZ3PTKLJCOM7WJEYZFKFWMNSV
cvssv3.1 5.5 https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/MDJKJQOMVFDFIDS27OQJXNOYHV2O273D
generic_textual MODERATE https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/MDJKJQOMVFDFIDS27OQJXNOYHV2O273D
cvssv3.1 5.5 https://nvd.nist.gov/vuln/detail/CVE-2021-31812
generic_textual MODERATE https://nvd.nist.gov/vuln/detail/CVE-2021-31812
cvssv3.1 5.5 https://www.oracle.com/security-alerts/cpuapr2022.html
generic_textual MODERATE https://www.oracle.com/security-alerts/cpuapr2022.html
cvssv3.1 5.5 https://www.oracle.com/security-alerts/cpujan2022.html
generic_textual MODERATE https://www.oracle.com/security-alerts/cpujan2022.html
cvssv3.1 5.5 https://www.oracle.com/security-alerts/cpujul2022.html
generic_textual MODERATE https://www.oracle.com/security-alerts/cpujul2022.html
cvssv3.1 5.5 https://www.oracle.com/security-alerts/cpuoct2021.html
generic_textual MODERATE https://www.oracle.com/security-alerts/cpuoct2021.html
cvssv3.1 5.5 http://www.openwall.com/lists/oss-security/2021/06/12/1
generic_textual MODERATE http://www.openwall.com/lists/oss-security/2021/06/12/1
Reference id Reference type URL
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-31812.json
https://api.first.org/data/v1/epss?cve=CVE-2021-31812
https://lists.apache.org/thread.html/r132e9dbbe0ebdc08b39583d8be0a575fdba573d60a42d940228bceff@%3Cnotifications.ofbiz.apache.org%3E
https://lists.apache.org/thread.html/r143fd8445e0e778f4a85187bd79438630b96b8040e9401751fdb8aea@%3Ccommits.ofbiz.apache.org%3E
https://lists.apache.org/thread.html/r179cc3b6822c167702ab35fe36093d5da4c99af44238c8a754c6860f@%3Ccommits.ofbiz.apache.org%3E
https://lists.apache.org/thread.html/r2090789e4dcc2c87aacbd87d5f18e2d64dcb9f6eb7c47f5cf7d293cb@%3Cnotifications.ofbiz.apache.org%3E
https://lists.apache.org/thread.html/ra2ab0ce69ce8aaff0773b8c1036438387ce004c2afc6f066626e205e@%3Cusers.pdfbox.apache.org%3E
https://lists.apache.org/thread.html/ra2ab0ce69ce8aaff0773b8c1036438387ce004c2afc6f066626e205e%40%3Cusers.pdfbox.apache.org%3E
https://lists.apache.org/thread.html/rd4b6db6c3b8ab3c70f1c3bbd725a40920896453ffc2744ade6afd9fb@%3Cnotifications.ofbiz.apache.org%3E
https://lists.apache.org/thread.html/re0cacd3fb337cdf8469853913ed2b4ddd8f8bfc52ff0ddbe61c1dfba@%3Ccommits.ofbiz.apache.org%3E
https://lists.apache.org/thread.html/rf251f6c358087107f8c23473468b279d59d50a75db6b4768165c78d3@%3Cannounce.apache.org%3E
https://lists.apache.org/thread.html/rfe26bcaba564deb505c32711ba68df7ec589797dcd96ff3389a8aaba@%3Cnotifications.ofbiz.apache.org%3E
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/7HHWJRFXZ3PTKLJCOM7WJEYZFKFWMNSV
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/MDJKJQOMVFDFIDS27OQJXNOYHV2O273D
https://www.oracle.com/security-alerts/cpuapr2022.html
https://www.oracle.com/security-alerts/cpujan2022.html
https://www.oracle.com/security-alerts/cpujul2022.html
https://www.oracle.com/security-alerts/cpuoct2021.html
http://www.openwall.com/lists/oss-security/2021/06/12/1
1971658 https://bugzilla.redhat.com/show_bug.cgi?id=1971658
991526 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=991526
991527 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=991527
CVE-2021-31812 https://nvd.nist.gov/vuln/detail/CVE-2021-31812
GHSA-7grw-6pjh-jpc9 https://github.com/advisories/GHSA-7grw-6pjh-jpc9
RHSA-2021:4918 https://access.redhat.com/errata/RHSA-2021:4918
No exploits are available.
Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-31812.json
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H Found at https://lists.apache.org/thread.html/r132e9dbbe0ebdc08b39583d8be0a575fdba573d60a42d940228bceff@%3Cnotifications.ofbiz.apache.org%3E
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H Found at https://lists.apache.org/thread.html/r143fd8445e0e778f4a85187bd79438630b96b8040e9401751fdb8aea@%3Ccommits.ofbiz.apache.org%3E
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H Found at https://lists.apache.org/thread.html/r179cc3b6822c167702ab35fe36093d5da4c99af44238c8a754c6860f@%3Ccommits.ofbiz.apache.org%3E
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H Found at https://lists.apache.org/thread.html/r2090789e4dcc2c87aacbd87d5f18e2d64dcb9f6eb7c47f5cf7d293cb@%3Cnotifications.ofbiz.apache.org%3E
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H Found at https://lists.apache.org/thread.html/ra2ab0ce69ce8aaff0773b8c1036438387ce004c2afc6f066626e205e@%3Cusers.pdfbox.apache.org%3E
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H Found at https://lists.apache.org/thread.html/ra2ab0ce69ce8aaff0773b8c1036438387ce004c2afc6f066626e205e%40%3Cusers.pdfbox.apache.org%3E
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H Found at https://lists.apache.org/thread.html/rd4b6db6c3b8ab3c70f1c3bbd725a40920896453ffc2744ade6afd9fb@%3Cnotifications.ofbiz.apache.org%3E
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H Found at https://lists.apache.org/thread.html/re0cacd3fb337cdf8469853913ed2b4ddd8f8bfc52ff0ddbe61c1dfba@%3Ccommits.ofbiz.apache.org%3E
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H Found at https://lists.apache.org/thread.html/rf251f6c358087107f8c23473468b279d59d50a75db6b4768165c78d3@%3Cannounce.apache.org%3E
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H Found at https://lists.apache.org/thread.html/rfe26bcaba564deb505c32711ba68df7ec589797dcd96ff3389a8aaba@%3Cnotifications.ofbiz.apache.org%3E
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H Found at https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/7HHWJRFXZ3PTKLJCOM7WJEYZFKFWMNSV
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H Found at https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/MDJKJQOMVFDFIDS27OQJXNOYHV2O273D
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H Found at https://nvd.nist.gov/vuln/detail/CVE-2021-31812
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H Found at https://www.oracle.com/security-alerts/cpuapr2022.html
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H Found at https://www.oracle.com/security-alerts/cpujan2022.html
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H Found at https://www.oracle.com/security-alerts/cpujul2022.html
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H Found at https://www.oracle.com/security-alerts/cpuoct2021.html
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H Found at http://www.openwall.com/lists/oss-security/2021/06/12/1
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Exploit Prediction Scoring System (EPSS)
Percentile 0.45999
EPSS Score 0.00231
Published At June 4, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-06-04T16:21:32.239674+00:00 GitLab Importer Import https://gitlab.com/gitlab-org/advisories-community/-/blob/main/maven/org.apache.pdfbox/pdfbox/CVE-2021-31812.yml 38.6.0