An issue was discovered in Matrix libolm through 3.2.16.
Priority LOW 32CWE-208Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- High
- Impact type
- Information disclosure
- Confidentiality · integrity · availability
- None · High · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-208.
Summary
An issue was discovered in Matrix libolm through 3.2.16. The AES implementation is vulnerable to cache-timing attacks due to use of S-boxes. This is related to software that uses a lookup table for the SubWord step. This refers to the libolm implementation of Olm. NOTE: This vulnerability only affects products that are no longer supported by the maintainer.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00454 39th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:matrix:olm:*:*:*:*:*:*:*:* | up to 3.2.16 | Vulnerable | matrix-org |
- cpe:2.3:a:matrix:olm:*:*:*:*:*:*:*:* Versions up to 3.2.16 Vulnerable ·matrix-org
Remediation
No fixed version listed by the sources yet.
Vendor assessments
Timeline
- 2026-10-02 Threatist record created from CVE-2024-45191
- 2026-10-03 Alias added: GHSA-gc66-2jq6-66c6
References
More matrix-org Olm vulnerabilities
- TI-2021-13807 Matrix libolm before 3.2.3 allows a malicious Matrix homeserver to crash a client (while… CVSS 3.1CRITICAL 9.8
- TI-2021-20136 The olm_session_describe function in Matrix libolm before 3.2.7 is vulnerable to a buffer… CVSS 3.1CRITICAL 9.8
- TI-2024-30289 An issue was discovered in Matrix libolm through 3.2.16. CVSS 3.1MEDIUM 5.3
- TI-2024-30290 An issue was discovered in Matrix libolm through 3.2.16. CVSS 3.1MEDIUM 4.3
Sources
- CVE-2024-45191 · CVE Program
- CVE-2024-45191 · NVD
- FIRST EPSS
- GHSA-gc66-2jq6-66c6 · GitHub Advisory Database · CC BY 4.0
- CVE-2024-45191 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences