SUSE CVE-2026-93990

Expat before 2.8.5 fails to validate that a high surrogate in UTF-16 input is followed by a low surrogate, allowing malformed UTF-16 sequences to be accepted. Attackers can supply UTF-16 encoded XML containing lone high surrogates that consume the following code unit, causing Expat to pass unpair...

CVE-2026-93990

Expat before 2.8.5 fails to validate that a high surrogate in UTF-16 input is followed by a low surrogate, allowing malformed UTF-16 sequences to be accepted. Attackers can supply UTF-16 encoded XML containing lone high surrogates that consume the following code unit, causing Expat to pass unpair...

CVE-2026-72522

CVE-2026-72522 affects libexpat before 2.8.3, where an out-of-bounds read and infinite loop occur because low surrogates are treated the same as high surrogates in the *_toUtf16 functions. The vulnerability is an availability issue (HIGH impact) with local attack requirements and no confidentiali...

Mozilla Foundation Security Advisory 2008-43

Mozilla Foundation Security Advisory 2008-43 Title: BOM characters, low surrogates stripped from JavaScript before execution Impact: Moderate Announced: September 23, 2008 Reporter: Dave Reed, Chris Weber, Gareth Heyes Products: Firefox, Thunderbird, SeaMonkey Fixed in: Firefox 3.0.2 Firefox...

Cross site scripting

Mozilla Firefox 2.0.0.14, and other versions before 2.0.0.17, allows remote attackers to bypass cross-site scripting XSS protection mechanisms and conduct XSS attacks via HTML-escaped low surrogate characters that are ignored by the HTML parser, as demonstrated by a "jav&56325ascript" sequence, a...

CVE-2008-4066: Improper Neutralization of Input During Web Page Generation

Mozilla Firefox 2.0.0.14, and other versions before 2.0.0.17, allows remote attackers to bypass cross-site scripting XSS protection mechanisms and conduct XSS attacks via HTML-escaped low surrogate characters that are ignored by the HTML parser, as demonstrated by a "javascript" sequence, aka "HT...