VDB
CVE-2026-26209
CVE-2026-26209
PUBLISHED
CVSS 7.5 HIGH
cbor2 has a Denial of Service via Uncontrolled Recursion in cbor2.loads
EPSS 0.09% · 24.6th percentile
Risk Scores
CVSS v3.0
7.5
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS Score
0.09%
24.6th percentile
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| agronholm | cbor2 | *, *, < 5.9.0 |
| PyPI | cbor2 | 0, 0, 0 |
Timeline
- Mar 23, 2026 CVE Published
- Mar 23, 2026 PoC Published
- Mar 24, 2026 EPSS Score
- Mar 25, 2026 CVE Updated
- Mar 25, 2026 EPSS Score
- Mar 25, 2026 Coalition ESS Score
- Mar 25, 2026 PoC Published
- Mar 26, 2026 Security Advisory
- May 18, 2026 EPSS Score
- May 19, 2026 EPSS Score
- May 20, 2026 EPSS Score
- May 21, 2026 EPSS Score
References
- https://github.com/agronholm/cbor2/security/advisories/GHSA-3c37-wwvx-h642 url
- https://github.com/agronholm/cbor2/pull/275 url
- https://github.com/agronholm/cbor2/commit/e61a5f365ba610d5907a0ae1bc72769bba34294b url
- https://github.com/agronholm/cbor2/releases/tag/5.9.0 url
- https://nvd.nist.gov/vuln/detail/CVE-2026-26209 advisory
- https://github.com/agronholm/cbor2 package