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Vulnerability details: VCID-5hzf-gdbj-8ud8
Vulnerability ID VCID-5hzf-gdbj-8ud8
Aliases CVE-2023-1999
Summary Double Free There exists a use after free/double free in libwebp. An attacker can use the ApplyFiltersAndEncode() function and loop through to free best.bw and assign best = trial pointer. The second loop will then return 0 because of an Out of memory error in VP8 encoder, the pointer is still assigned to trial and the AddressSanitizer will attempt a double free.
Status Published
Exploitability 0.5
Weighted Severity 8.0
Risk 4.0
Affected and Fixed Packages Package Details
Weaknesses (4)
CWE-1035 OWASP Top Ten 2017 Category A9 - Using Components with Known Vulnerabilities
CWE-415 Double Free
CWE-937 OWASP Top Ten 2013 Category A9 - Using Components with Known Vulnerabilities
CWE-416 Use After Free
System Score Found at
cvssv3 7.5 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2023-1999.json
epss 0.00376 https://api.first.org/data/v1/epss?cve=CVE-2023-1999
epss 0.00376 https://api.first.org/data/v1/epss?cve=CVE-2023-1999
epss 0.00376 https://api.first.org/data/v1/epss?cve=CVE-2023-1999
epss 0.00376 https://api.first.org/data/v1/epss?cve=CVE-2023-1999
epss 0.00376 https://api.first.org/data/v1/epss?cve=CVE-2023-1999
epss 0.00376 https://api.first.org/data/v1/epss?cve=CVE-2023-1999
epss 0.00376 https://api.first.org/data/v1/epss?cve=CVE-2023-1999
epss 0.00376 https://api.first.org/data/v1/epss?cve=CVE-2023-1999
cvssv3.1 5.3 https://chromium.googlesource.com/webm/libwebp
ssvc Track https://chromium.googlesource.com/webm/libwebp
cvssv3.1 7.5 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
cvssv3.1 5.3 https://security.gentoo.org/glsa/202309-05
ssvc Track https://security.gentoo.org/glsa/202309-05
generic_textual high https://www.mozilla.org/en-US/security/advisories/mfsa2023-13
generic_textual high https://www.mozilla.org/en-US/security/advisories/mfsa2023-14
generic_textual high https://www.mozilla.org/en-US/security/advisories/mfsa2023-15
Reference id Reference type URL
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2023-1999.json
https://api.first.org/data/v1/epss?cve=CVE-2023-1999
https://chromium.googlesource.com/webm/libwebp
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-0547
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-1945
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-1999
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-28427
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-29479
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-29533
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-29535
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-29536
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-29539
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-29541
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-29548
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-29550
https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
1035371 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1035371
2186102 https://bugzilla.redhat.com/show_bug.cgi?id=2186102
CVE-2023-1999 https://nvd.nist.gov/vuln/detail/CVE-2023-1999
GLSA-202305-35 https://security.gentoo.org/glsa/202305-35
mfsa2023-13 https://www.mozilla.org/en-US/security/advisories/mfsa2023-13
mfsa2023-14 https://www.mozilla.org/en-US/security/advisories/mfsa2023-14
mfsa2023-15 https://www.mozilla.org/en-US/security/advisories/mfsa2023-15
RHSA-2023:1785 https://access.redhat.com/errata/RHSA-2023:1785
RHSA-2023:1786 https://access.redhat.com/errata/RHSA-2023:1786
RHSA-2023:1787 https://access.redhat.com/errata/RHSA-2023:1787
RHSA-2023:1788 https://access.redhat.com/errata/RHSA-2023:1788
RHSA-2023:1789 https://access.redhat.com/errata/RHSA-2023:1789
RHSA-2023:1790 https://access.redhat.com/errata/RHSA-2023:1790
RHSA-2023:1791 https://access.redhat.com/errata/RHSA-2023:1791
RHSA-2023:1792 https://access.redhat.com/errata/RHSA-2023:1792
RHSA-2023:1802 https://access.redhat.com/errata/RHSA-2023:1802
RHSA-2023:1803 https://access.redhat.com/errata/RHSA-2023:1803
RHSA-2023:1804 https://access.redhat.com/errata/RHSA-2023:1804
RHSA-2023:1805 https://access.redhat.com/errata/RHSA-2023:1805
RHSA-2023:1806 https://access.redhat.com/errata/RHSA-2023:1806
RHSA-2023:1809 https://access.redhat.com/errata/RHSA-2023:1809
RHSA-2023:1810 https://access.redhat.com/errata/RHSA-2023:1810
RHSA-2023:1811 https://access.redhat.com/errata/RHSA-2023:1811
RHSA-2023:2072 https://access.redhat.com/errata/RHSA-2023:2072
RHSA-2023:2073 https://access.redhat.com/errata/RHSA-2023:2073
RHSA-2023:2075 https://access.redhat.com/errata/RHSA-2023:2075
RHSA-2023:2076 https://access.redhat.com/errata/RHSA-2023:2076
RHSA-2023:2077 https://access.redhat.com/errata/RHSA-2023:2077
RHSA-2023:2078 https://access.redhat.com/errata/RHSA-2023:2078
RHSA-2023:2084 https://access.redhat.com/errata/RHSA-2023:2084
RHSA-2023:2085 https://access.redhat.com/errata/RHSA-2023:2085
USN-6078-1 https://usn.ubuntu.com/6078-1/
USN-6078-2 https://usn.ubuntu.com/6078-2/
No exploits are available.
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2023-1999.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:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N Found at https://chromium.googlesource.com/webm/libwebp
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:P/P:M/B:A/M:M/D:T/2024-09-26T19:14:09Z/ Found at https://chromium.googlesource.com/webm/libwebp
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H Found at https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.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:H/PR:L/UI:N/S:U/C:H/I:N/A:N Found at https://security.gentoo.org/glsa/202309-05
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:P/P:M/B:A/M:M/D:T/2024-09-26T19:14:09Z/ Found at https://security.gentoo.org/glsa/202309-05
Exploit Prediction Scoring System (EPSS)
Percentile 0.5917
EPSS Score 0.00376
Published At April 2, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-04-01T12:51:26.872682+00:00 GitLab Importer Import https://gitlab.com/gitlab-org/advisories-community/-/blob/main/conan/libwebp/CVE-2023-1999.yml 38.0.0