py-libp2p before 0.2.3 allows a peer to cause a denial of service (resource consumption) via a large RSA key.
Priority LOW 20CWE-770Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · Low
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-770.
Summary
py-libp2p before 0.2.3 allows a peer to cause a denial of service (resource consumption) via a large RSA key.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00378 31st percentileScored 2026-11-07
Fix Fixed py-libp2p (libp2p): 0.2.3libp2p (PyPI): 0.2.3
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
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 |
|---|---|---|---|---|---|
| libp2p | py-libp2p | before 0.2.3 | 0.2.3 | Patch available | CNA |
| — | libp2p (PyPI) | before 0.2.3 | 0.2.3 | Patch available | GHSA-x8c6-gj59-6rx8 |
- py-libp2p Vendorlibp2p Affected before 0.2.3 Fixed in 0.2.3 Patch available CNA
- libp2p (PyPI) Vendor— Affected before 0.2.3 Fixed in 0.2.3 Patch available GHSA-x8c6-gj59-6rx8
Remediation
- Fix · CNA py-libp2p (libp2p) Fixed in 0.2.3
- Fix · GHSA-x8c6-gj59-6rx8 libp2p (PyPI) Fixed in 0.2.3 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2025-29606
- 2026-10-03 Alias added: GHSA-x8c6-gj59-6rx8
References
More libp2p vulnerabilities
- TI-2026-60386 libp2p-rendezvous through 0.17.1 Denial of Service via Unbounded Registration TTL in Discovery Responses CVSS 4.0HIGH 8.7
- TI-2026-58865 libp2p: PeerStore accepts attacker-signed PeerRecords for a victim peer ID and stores certified attacker addresses CVSS 3.1HIGH 8.2
- TI-2026-44102 libp2p-quic: Remote panic via certificate expiry race during QUIC handshake CVSS 4.0HIGH 8.2
- TI-2026-27587 libp2p-rust has unbounded rendezvous DISCOVER cookies enable remote memory exhaustion CVSS 3.1HIGH 8.2
- TI-2026-58864 libp2p: Gossipsub StrictSign accepts attacker-signed messages as a victim RSA peer ID CVSS 3.1HIGH 7.5
- TI-2026-53982 libp2p: Circuit relay v2 server reservation refresh leaks abort listeners and allows remote resource exhaustion CVSS 3.1HIGH 7.5
Sources
- CVE-2025-29606 · CVE Program
- CVE-2025-29606 · NVD
- FIRST EPSS
- GHSA-x8c6-gj59-6rx8 · GitHub Advisory Database · CC BY 4.0
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