CVE catalog
CVE-2026-111269
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 iCal
- Severity
- Medium · CVSS 6.9
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - Published
- Updated
- Source
- [NVD] · [CVE record]
- EPSS
- 0.13% · Oct 25, 2026
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.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | libical3 | sid | 3.0.20-3 | unknown |
| Debian | libical3 | forky | 3.0.20-3 | unknown |
| Debian | libical3 | trixie | 3.0.20-1 | unknown |
| Debian | libical3 | bookworm | 3.0.16-1 | unknown |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | libical3 | source | sid | (unfixed) | not yet assigned | Not reported | Not reported |
| Debian | libical3 | source | forky | (unfixed) | not yet assigned | Not reported | Not reported |
| Debian | libical3 | source | trixie | (unfixed) | not yet assigned | Not reported | Not reported |
| Debian | libical3 | source | bookworm | (unfixed) | not yet assigned | Not reported | Not reported |
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [gir1.2-ical-3.0]Affected
Source package: [libical3]
Details (2)
3.0.16-1+b1· amd64 · bookwormAffected
nvd · libical3 · debian · bookworm; nvd · libical3 · debian · 12
3.0.16-1+b1· arm64 · bookwormAffected
nvd · libical3 · debian · bookworm; nvd · libical3 · debian · 12
- [libical3]Affected
Source package: [libical3]
Details (2)
3.0.16-1+b1· amd64 · bookwormAffected
nvd · libical3 · debian · bookworm; nvd · libical3 · debian · 12
3.0.16-1+b1· arm64 · bookwormAffected
nvd · libical3 · debian · bookworm; nvd · libical3 · debian · 12
- [libical-dev]Affected
Source package: [libical3]
Details (2)
3.0.16-1+b1· amd64 · bookwormAffected
nvd · libical3 · debian · bookworm; nvd · libical3 · debian · 12
3.0.16-1+b1· arm64 · bookwormAffected
nvd · libical3 · debian · bookworm; nvd · libical3 · debian · 12
- [libical-doc]Affected
Source package: [libical3]
Details (2)
3.0.16-1· all · bookwormAffected
nvd · libical3 · debian · bookworm; nvd · libical3 · debian · 12
3.0.16-1· all · bookwormAffected
nvd · libical3 · debian · bookworm; nvd · libical3 · debian · 12
[Debian 13 (Trixie)]
- [gir1.2-ical-3.0]Affected
Source package: [libical3]
Details (2)
3.0.20-1+b1· amd64 · trixieAffected
nvd · libical3 · debian · 13
3.0.20-1+b1· arm64 · trixieAffected
nvd · libical3 · debian · 13
- [libical3t64]Affected
Source package: [libical3]
Details (2)
3.0.20-1+b1· amd64 · trixieAffected
nvd · libical3 · debian · 13
3.0.20-1+b1· arm64 · trixieAffected
nvd · libical3 · debian · 13
- [libical-dev]Affected
Source package: [libical3]
Details (2)
3.0.20-1+b1· amd64 · trixieAffected
nvd · libical3 · debian · 13
3.0.20-1+b1· arm64 · trixieAffected
nvd · libical3 · debian · 13
- [libical-doc]Affected
Source package: [libical3]
Details (2)
3.0.20-1· all · trixieAffected
nvd · libical3 · debian · 13
3.0.20-1· all · trixieAffected
nvd · libical3 · debian · 13
Observed:
References
- [https://ftp.suse.com/pub/projects/security/]
- [https://github.com/libical/libical]
- [https://github.com/libical/libical/blob/9cfca65c122fa23b9680a28e0c9225a2fd015fc5/src/libical/icalvalue.c#L1608-L1645]
- [https://github.com/libical/libical/commit/d753885ce2de7c105d6b8c405aa7aee1d98ad8de]
- [https://github.com/libical/libical/pull/1455]
- [https://hackmd.io/@haind-pwn/libical-icalvalue-decode-ical-string-oob-read]
- [https://nvd.nist.gov/vuln/detail/CVE-2026-111269]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2026-111269]
- [https://security-tracker.debian.org/tracker/CVE-2026-111269]
- [https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-111269.json]
- [https://www.vulncheck.com/advisories/libical-through-4.0.6-heap-out-of-bounds-read-via-icalvalue-decode-ical-string]
[Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]