CVE-2026-111269libical through 4.0.6 Heap Out-of-Bounds Read via icalvalue_decode_ical_string
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- 6.1 MEDIUM (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H
- Weakness (CWE)
- CWE-125
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- VulnCheck
- NVD analysis
- Deferred
- Record last updated
- Oct 15, 2026
- First seen by InfoSec Signals
- Oct 15, 2026
Affected products
libical libical libical:libical (from the name) | through 4.0.6 | CNA record |
References
- https://hackmd.io/@haind-pwn/libical-icalvalue-decode-ical-string-oob-readtechnical-description
- https://github.com/libical/libical/pull/1455patch, issue-tracking
- https://github.com/libical/libical/commit/d753885ce2de7c105d6b8c405aa7aee1d98ad8depatch
- https://github.com/libical/libical/blob/9cfca65c122fa23b9680a28e0c9225a2fd015fc5/src/libical/icalvalue.c#L1608-L1645technical-description
- https://github.com/libical/libicalproduct
- https://www.vulncheck.com/advisories/libical-through-4.0.6-heap-out-of-bounds-read-via-icalvalue-decode-ical-stringthird-party-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.