Medium severity6.1NVD Advisory· Published Oct 15, 2026
CVE-2026-111269
CVE-2026-111269
Description
libical through 4.0.6 contains a heap-based out-of-bounds read in icalvalue_decode_ical_string() in src/libical/icalvalue.c when decoding input ending in a backslash. Attackers can supply escaped iCalendar text with a trailing backslash, causing the loop to read past the terminator and crash the application or leak adjacent heap memory.
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Affected products
1- Range: <=4.0.6
Patches
Vulnerability mechanics
References
5- github.com/libical/libical/blob/9cfca65c122fa23b9680a28e0c9225a2fd015fc5/src/libical/icalvalue.cnvd
- github.com/libical/libical/commit/d753885ce2de7c105d6b8c405aa7aee1d98ad8denvd
- github.com/libical/libical/pull/1455nvd
- hackmd.io/@haind-pwn/libical-icalvalue-decode-ical-string-oob-readnvd
- www.vulncheck.com/advisories/libical-through-4.0.6-heap-out-of-bounds-read-via-icalvalue-decode-ical-stringnvd
News mentions
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