CVE-2025-29606
py-libp2p is vulnerable to DoS attacks through use of large RSA keys
py-libp2p before 0.2.3 allows a peer to cause a denial of service (resource consumption) via a large RSA key.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- None
- Availability
- Low
Exploit likelihood
What each source reports
CVE List Score used
py-libp2p before 0.2.3 allows a peer to cause a denial of service (resource consumption) via a large RSA key.
- Record
CVE-2025-29606- CVSS 3.1
- 4.3 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L - Weakness
- CWE-770
- Updated
- 2026-11-02
EUVDEUVD-2025-21304
py-libp2p before 0.2.3 allows a peer to cause a denial of service (resource consumption) via a large RSA key.
- Record
EUVD-2025-21304- CVSS 3.1
- 4.3 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-x8c6-gj59-6rx8
py-libp2p is vulnerable to DoS attacks through use of large RSA keys
py-libp2p before 0.2.3 allows a peer to cause a denial of service (resource consumption) via a large RSA key.
- Record
GHSA-x8c6-gj59-6rx8- CVSS 3.1
- 4.3 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L - Weakness
- CWE-770
- Updated
- 2026-11-02
NVD
py-libp2p before 0.2.3 allows a peer to cause a denial of service (resource consumption) via a large RSA key.
- Record
CVE-2025-29606- CVSS 3.1
- 4.3 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L - Weakness
- CWE-770
- Updated
- 2026-11-02
OSV
py-libp2p before 0.2.3 allows a peer to cause a denial of service (resource consumption) via a large RSA key.
- Record
CVE-2025-29606- CVSS 3.1
- 4.3 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L - Weakness
- CWE-770
- Updated
- 2026-11-02
OSVGHSA-x8c6-gj59-6rx8
py-libp2p is vulnerable to DoS attacks through use of large RSA keys
py-libp2p before 0.2.3 allows a peer to cause a denial of service (resource consumption) via a large RSA key.
- Record
GHSA-x8c6-gj59-6rx8- CVSS 3.1
- 4.3 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L - Weakness
- CWE-770
- Updated
- 2026-11-02
OSVPYSEC-2026-1536
py-libp2p is vulnerable to DoS attacks through use of large RSA keys
py-libp2p before 0.2.3 allows a peer to cause a denial of service (resource consumption) via a large RSA key.
- Record
PYSEC-2026-1536- CVSS 3.1
- 4.3 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L - Updated
- 2026-11-02
Affected products
Affected packages
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2025-29606 is a medium vulnerability (CVSS 4.3) in Libp2p Py-libp2p, published July 14, 2025. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.38%, the 31st percentile. Fixed in libp2p 0.2.3.
References
github.com/libp2p/py-libp2p/issues/526
nvd.nist.gov/vuln/detail/CVE-2025-29606
pypi.org/project/libp2p