Low severity · published Jun 29, 2026
CVE-2026-13523
GPAC ISOBMFF base_encoding.c data amplification
3.3
CVSS
0.2%
EPSS
No
On KEV
Description
A weakness has been identified in GPAC up to 26.02.0. This affects an unknown part of the file src/utils/base_encoding.c of the component ISOBMFF Parser. Executing a manipulation can lead to highly compressed data. The attack needs to be launched locally. The exploit has been made available to the public and could be used for attacks. This patch is called 297f2d8d1f493d8b241330533cd47f7da758aeb3. A patch should be applied to remediate this issue. The vendor confirms: "We added a check on inflate output size, if it surpasses 32 times the input size we stop in error. This value could be adjusted later."
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
None
Availability
Low
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 5% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
GP
GPAC · Gpac
26.02 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-13523
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-13523
github.com
https://github.com/gpac/gpac/
github.com
https://github.com/gpac/gpac/commit/297f2d8d1f493d8b241330533cd47f7da758aeb3
github.com
https://github.com/gpac/gpac/issues/3588
github.com
https://github.com/gpac/gpac/pull/3589
vuldb.com
https://vuldb.com/cve/CVE-2026-13523
vuldb.com
https://vuldb.com/submit/840159
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