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Vulnerability details: VCID-6vv8-kr7f-mubf
Vulnerability ID VCID-6vv8-kr7f-mubf
Aliases BIT-airflow-2026-33858
CVE-2026-33858
GHSA-mc4f-r875-v87w
PYSEC-2026-20
Summary Dag Authors, who normally should not be able to execute code in the webserver context could craft XCom payload causing the webserver to execute arbitrary code. Since Dag Authors are already highly trusted, severity of this issue is Low. Users are recommended to upgrade to Apache Airflow 3.2.0, which resolves this issue.
Status Published
Exploitability 0.5
Weighted Severity 8.0
Risk 4.0
Affected and Fixed Packages Package Details
Weaknesses (3)
CWE-502 Deserialization of Untrusted Data
CWE-937 OWASP Top Ten 2013 Category A9 - Using Components with Known Vulnerabilities
CWE-1035 OWASP Top Ten 2017 Category A9 - Using Components with Known Vulnerabilities
System Score Found at
epss 0.002 https://api.first.org/data/v1/epss?cve=CVE-2026-33858
epss 0.002 https://api.first.org/data/v1/epss?cve=CVE-2026-33858
epss 0.002 https://api.first.org/data/v1/epss?cve=CVE-2026-33858
cvssv3.1 8.8 https://github.com/advisories/GHSA-mc4f-r875-v87w
cvssv3.1_qr HIGH https://github.com/advisories/GHSA-mc4f-r875-v87w
cvssv3.1 8.8 https://github.com/apache/airflow
generic_textual HIGH https://github.com/apache/airflow
cvssv3.1 8.8 https://github.com/apache/airflow/pull/64148
generic_textual HIGH https://github.com/apache/airflow/pull/64148
ssvc Track https://github.com/apache/airflow/pull/64148
cvssv3.1 8.8 https://github.com/pypa/advisory-database/tree/main/vulns/apache-airflow/PYSEC-2026-20.yaml
generic_textual HIGH https://github.com/pypa/advisory-database/tree/main/vulns/apache-airflow/PYSEC-2026-20.yaml
cvssv3.1 8.8 https://lists.apache.org/thread/1npt3o2x81s0gw9tmfcv4n7p1z9hdmy0
generic_textual HIGH https://lists.apache.org/thread/1npt3o2x81s0gw9tmfcv4n7p1z9hdmy0
ssvc Track https://lists.apache.org/thread/1npt3o2x81s0gw9tmfcv4n7p1z9hdmy0
cvssv3.1 8.8 https://nvd.nist.gov/vuln/detail/CVE-2026-33858
generic_textual HIGH https://nvd.nist.gov/vuln/detail/CVE-2026-33858
cvssv3.1 8.8 http://www.openwall.com/lists/oss-security/2026/04/13/7
generic_textual HIGH http://www.openwall.com/lists/oss-security/2026/04/13/7
Reference id Reference type URL
https://api.first.org/data/v1/epss?cve=CVE-2026-33858
https://github.com/advisories/GHSA-mc4f-r875-v87w
https://github.com/apache/airflow
https://github.com/pypa/advisory-database/tree/main/vulns/apache-airflow/PYSEC-2026-20.yaml
https://nvd.nist.gov/vuln/detail/CVE-2026-33858
http://www.openwall.com/lists/oss-security/2026/04/13/7
1npt3o2x81s0gw9tmfcv4n7p1z9hdmy0 https://lists.apache.org/thread/1npt3o2x81s0gw9tmfcv4n7p1z9hdmy0
64148 https://github.com/apache/airflow/pull/64148
No exploits are available.
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Found at https://github.com/advisories/GHSA-mc4f-r875-v87w
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:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Found at https://github.com/apache/airflow
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:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Found at https://github.com/apache/airflow/pull/64148
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: SSVCv2/E:N/A:N/T:T/P:M/B:A/M:M/D:T/2026-04-13T15:54:45Z/ Found at https://github.com/apache/airflow/pull/64148
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Found at https://github.com/pypa/advisory-database/tree/main/vulns/apache-airflow/PYSEC-2026-20.yaml
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:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Found at https://lists.apache.org/thread/1npt3o2x81s0gw9tmfcv4n7p1z9hdmy0
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: SSVCv2/E:N/A:N/T:T/P:M/B:A/M:M/D:T/2026-04-13T15:54:45Z/ Found at https://lists.apache.org/thread/1npt3o2x81s0gw9tmfcv4n7p1z9hdmy0
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Found at https://nvd.nist.gov/vuln/detail/CVE-2026-33858
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:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Found at http://www.openwall.com/lists/oss-security/2026/04/13/7
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 0.42095
EPSS Score 0.002
Published At June 11, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-06-11T16:49:42.765507+00:00 Vulnrichment Import https://github.com/cisagov/vulnrichment/blob/develop/2026/33xxx/CVE-2026-33858.json 38.6.0