Quick answers
- Is CVE-2026-111269 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-111269 being exploited in the wild.
- How severe is CVE-2026-111269?
- Medium severity, with a CVSS score of 6.1, published 15 October 2026.
- Which products and versions are affected?
- Libical through 4.0.6.
- Is there a fix for CVE-2026-111269?
- No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
- How is CVE-2026-111269 attacked?
- It is attacked over the network, in a software library.
- Am I affected by CVE-2026-111269?
- Check whether you run Libical at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
A heap-based out-of-bounds read exists in the icalvalue_decode_ical_string() function when decoding iCalendar strings ending with a backslash; the parsing loop reads past the null terminator into adjacent heap memory. An attacker can trigger this by supplying malformed escaped iCalendar text, leading to information disclosure or denial of service with no authentication required.
Affected products
- libical through 4.0.6
Timeline
- 2026-10-15: disclosed