CVE-2025-11680 — Out-of-bounds Write in libwebsockets PNG parsing
Out-of-bounds Write in unfilter_scanline in warmcat libwebsockets allows, when the LWS_WITH_UPNG flag is enabled during compilation and the HTML display stack is used, to write …
Published: 2025-10-20 · CVSS: 5.9 · CVSS 4.0
Out-of-bounds Write in unfilter_scanline in warmcat libwebsockets allows, when the LWS_WITH_UPNG flag is enabled during compilation and the HTML display stack is used, to write past a heap allocated buffer possibly causing a crash, when the user visits an attacker controlled website that contains a crafted PNG file with a big width value that causes an integer overflow which value is used for determining the size of a heap allocation.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7