Vulnerability in Gpac
CVE-2026-13523
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."
Published · last modified .
CVSS v3 metric
CVSS v3 base score 3.3 (Low). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L.
EPSS exploit prediction
EPSS: 0.002 (4.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 5th percentile — 4.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000
Affected products
- Gpac — versions 26.02
Weakness classification (CWE)
References
- vuldb.com/vuln/374531 (vdb-entry)
- vuldb.com/vuln/374531/cti (signature, permissions-required)
- vuldb.com/cve/CVE-2026-13523 (third-party-advisory)
- vuldb.com/submit/840159 (third-party-advisory)
- github.com/gpac/gpac/issues/3588 (issue-tracking, exploit)
- github.com/gpac/gpac/pull/3589 (issue-tracking, patch)
- github.com/gpac/gpac/commit/297f2d8d1f493d8b241330533cd47f7da758aeb3 (patch)
- github.com/gpac/gpac/ (product)
Frequently asked questions
- What is CVE-2026-13523?
- CVE-2026-13523 is a low-severity vulnerability in Gpac, classified under Improper Resource Shutdown or Release. CVSS score: 3.3/10. Published 2026-06-29.
- How severe is CVE-2026-13523?
- Low severity. CVSS v3 base score is 3.3 out of 10.