CVE-2025-29606 json
py-libp2p is vulnerable to DoS attacks through use of large RSA keys
published 2025-07-14 15 mo ago modified 2026-07-07 4 mo ago also GHSA-x8c6-gj59-6rx8 , PYSEC-2026-1536 , EUVD-2025-21304
- cvss
- 4.3
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.4%
- EPSS 0.4% chance of exploitation in 30 days, percentile 32%
- public exploits
- 0
- none known
Summary
py-libp2p before 0.2.3 allows a peer to cause a denial of service (resource consumption) via a large RSA key.
Patch / fix
- pypi libp2p 0.2.3
- libp2p py-libp2p 0.2.3
- github.com/libp2p/py-libp2p@e150d31 commit
- github.com/libp2p/py-libp2p#531 pull request
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 15 mo ago
Exploit prediction
0.38% chance of exploitation in the next 30 days, higher than 32% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 4.3 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L |
| GitHub | 3.1 | 4.3 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L |
| OSV | 3.1 | 4.3 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| pypi | libp2p | <0.2.3 |
0.2.3 |
Affected products
- libp2p py-libp2p
Classification
- Weakness
-
- CWE-770 Allocation of Resources Without Limits or Throttling
References
-
github.com
/libp2p/py-libp2p/pull/531/files
web
-
github.com
/libp2p/py-libp2p/commit/e150d3153af30530ce61d751bc166e099f1ead7a
web
-
github.com
/libp2p/py-libp2p/issues/526
web
-
github.com
/libp2p/py-libp2p/compare/v0.2.2...v0.2.3
web
-
nvd.nist.gov
/vuln/detail/CVE-2025-29606
advisory
-
github.com
/libp2p/py-libp2p
package
-
pypi.org
/project/libp2p
package
-
github.com
/advisories/GHSA-x8c6-gj59-6rx8
advisory
Sources
- CVE List CVE-2025-29606
- GitHub Advisory GHSA-x8c6-gj59-6rx8
- NVD CVE-2025-29606
- OSV PYSEC-2026-1536
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.