CVE-2023-26991

HIGH 7.8CVE-2023-26991 · Published 04/04/2023 · updated 17/06/2026

In short

CVE-2023-26991 is a HIGH (CVSS 7.8) vulnerability affecting swftools (swftools).
Chance of exploitation in the next 30 days (EPSS): 0.31%, higher than 24.0% of all vulnerabilities.
No patched version is listed yet: follow the vendor's advisory in References.

Package	Affected versions	Patched versions
swftools swftools	`= 0.9.2`	No fix yet

SWFTools v0.9.2 was discovered to contain a stack-use-after-scope in the swf_ReadSWF2 function in lib/rfxswf.c.

Running one of these products? Scan your site to see whether it exposes a vulnerable version.