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CVE-2024-26134

22
FAUCET Score

CVE-2024-26134 is a denial-of-service vulnerability affecting cbor2 versions 5.5.1 through 5.6.1, as well as related Fedora packages. An unauthenticated attacker can crash a service parsing CBOR binary data by sending a sufficiently long object. Rated 7.5 HIGH, this vulnerability has a low attack complexity and can lead to high availability impact. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
>= 5.5.1, < 5.6.2CPE matchmatch criteria
cpe:2.3:a:agronholm:cbor2:*:*:*:*:*:python:*:*
38CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:38:*:*:*:*:*:*:*
39CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:39:*:*:*:*:*:*:*
40CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:40:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.17%
Probability of exploitation in next 30 days
EPSS Percentile
64.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0117 is in the 43rd percentile among its peer group of 51,551 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

github_advisorypatch availablevia nvd_reference
View patch
pippatch availablevia ghsa
Product: cbor2Fixed in: 5.6.2

Vendor Advisories (1)

pipGHSA-375g-39jq-vq7mhigh

Potential buffer overflow in CBOR2 decoder

Feb 21, 2024

References

github.com / agronholm/cbor2/commit/387755eacf0be35591a478d3c67fe10618a6d542
Product
github.com / agronholm/cbor2/commit/4de6991ba29bf2290d7b9d83525eda7d021873df
Patch
github.com / agronholm/cbor2/pull/204
Issue Tracking
github.com / agronholm/cbor2/releases/tag/5.6.2
Release Notes
github.com / agronholm/cbor2/security/advisories/GHSA-375g-39jq-vq7m
ExploitVendor Advisory
lists.fedoraproject.org / archives/list/[email protected]/message/BT42VXZMMMCSSHMA65KKPOZCXJEYHNR5
Mailing List
lists.fedoraproject.org / archives/list/[email protected]/message/GX524ZG2XJWFV37UQKQ4LWIH4UICSGEQ
Mailing List
lists.fedoraproject.org / archives/list/[email protected]/message/PWC3VU6YV6EXKCSX5GTKWLBZIDIJNQJY
Mailing List