Low 3.3Published Jun 28, 2026

CVE-2026-13523GPAC ISOBMFF base_encoding.c data amplification

Updated under an hour ago (Oct 27, 2026, 2:00 PM ET)

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Exploited in the last 30 days

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: 3.3 LOW (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C
Weakness (CWE): CWE-409, CWE-404
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: VulDB
NVD analysis: Deferred
Record last updated: Jun 29, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

n/a GPAC gpac:gpac	26.02	CNA record

References

References

https://vuldb.com/vuln/374531	vdb-entry
https://vuldb.com/vuln/374531/cti	signature, permissions-required
https://vuldb.com/cve/CVE-2026-13523	third-party-advisory
https://vuldb.com/submit/840159	third-party-advisory
https://github.com/gpac/gpac/issues/3588	exploit, issue-tracking
https://github.com/gpac/gpac/pull/3589	issue-tracking, patch
https://github.com/gpac/gpac/commit/297f2d8d1f493d8b241330533cd47f7da758aeb3	patch
https://github.com/gpac/gpac/	product

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.