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 c
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."
Details
Original advisory: https://nvd.nist.gov/vuln/detail/CVE-2026-13523
Exploitation outlook
EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.
- Low exploitation riskCVE-2026-135230.11% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 2% of all scored CVEs.
Referenced CVEs
| CVE | CSIRTS overview | External |
|---|---|---|
| CVE-2026-13523 | coverage & exploitation status | NVD · CVE.org |
Recent advisories for GPAC
A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.
- lowCVE-2026-15185: A vulnerability was determined in GPAC 26.03-DEV. This affects the function vobsub_read_idx of…nvd · 2026-07-09
- mediumCVE-2026-50810: A NULL pointer dereference in smooth_parse_stream_index() in src/media_tools/mpd.c in GPAC mas…nvd · 2026-07-07
- lowCVE-2025-15668: A vulnerability was identified in GPAC up to b40ce70f5. This issue affects the function sgpd_d…nvd · 2026-07-06
- lowCVE-2025-15667: A vulnerability was determined in GPAC up to 2.5-DEV. This vulnerability affects the function …nvd · 2026-07-06
- lowCVE-2026-14801: A security vulnerability has been detected in GPAC 26.03-DEV-rev342-g80071f700-master. The imp…nvd · 2026-07-06
- lowCVE-2026-14790: A flaw has been found in GPAC 26.02.0. This affects the function nhmldump_send_frame of the fi…nvd · 2026-07-06
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