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CVE-2024-45193

MEDIUM
4.3
CVSS Score
Published: August 22, 2024 at 12:00 AM UTC
Updated: June 17, 2026 at 07:53 AM UTC
1 product affected across 1 vendorOlm

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Severity
MEDIUM4.3
Exploit prediction
EPSS 0.3%
SSVC
No known exploit

Description

An issue was discovered in Matrix libolm through 3.2.16. There is Ed25519 signature malleability due to lack of validation criteria (does not ensure that S < n). This refers to the libolm implementation of Olm. NOTE: This vulnerability only affects products that are no longer supported by the maintainer.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Olm· Matrix
95%
v ≤ 3.2.16

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (4)

Product
Source: [email protected]
https://gitlab.matrix.org/matrix-org/olm/
Patch
Source: [email protected]
https://gitlab.matrix.org/matrix-org/olm/-/commit/6d4b5b07887821a95b144091c8497d09d377f985
Issue Tracking
Source: [email protected]
https://news.ycombinator.com/item?id=41249371
Exploit
Source: [email protected]
https://soatok.blog/2024/08/14/security-issues-in-matrixs-olm-library/

SSVC — Action Prioritization

SSVCNo known exploitAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

4.3MEDIUMCISA-ADP
Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
LOW
Availability
NONE
Vector?

Quick Info

StatusANALYZED
CWE
CWE-327

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