CVE-2026-91088: Buffer Overflow (CVSS 4.8)

Description

A vulnerability has been found in GPAC up to f1219cde. This issue affects the function gf_url_concatenate_ex of the file utils/url.c of the component URL Handler. The manipulation leads to heap-based buffer overflow. An attack has to be approached locally. Upgrading to version abi-16.23 is capable of addressing this issue. The identifier of the patch is afca1f1181668d85941d51ed1adf647807d5d975. It is advisable to upgrade the affected component.

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CVSS v3.1 Score

4.8

MEDIUM

CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:L

EPSS — Exploit Prediction

0.0012

Probability of exploitation

0.02%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-119 Buffer Overflow

CWE-122 CWE-122

References

Other References

https://github.com/gpac/gpac/ https://github.com/gpac/gpac/commit/afca1f1181668d85941d51ed1adf647807d5d975 https://github.com/gpac/gpac/issues/3808 https://github.com/gpac/gpac/releases/tag/abi-16.23 https://vuldb.com/cve/CVE-2026-91088 https://vuldb.com/submit/919757 https://vuldb.com/vuln/403650 https://vuldb.com/vuln/403650/cti https://github.com/gpac/gpac/issues/3808

Frequently Asked Questions

What is CVE-2026-91088? +

A vulnerability has been found in GPAC up to f1219cde. This issue affects the function gf_url_concatenate_ex of the file utils/url.c of the component URL Handler. The manipulation leads to heap-based buffer overflow. An attack has to be approached locally. Upgrading to version abi-16.23 is capable of addressing this issue. The identifier of the patch is afca1f1181668d85941d51ed1adf647807d5d975. It is advisable to upgrade the affected component. It has a CVSS v3.1 base score of 4.8 (MEDIUM).

How severe is CVE-2026-91088? +

CVE-2026-91088 has a CVSS v3.1 score of 4.8 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance. The EPSS score is 0.0012, placing it in the 0th percentile for exploitation probability.

How do I check if I'm vulnerable to CVE-2026-91088? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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