CVE-2026-35457: rust-libp2p · Unthrottled Resource Allocation
Affects rust-libp2pSource CVE Database V5
Not known to be exploited · CVSS 8.2 High : upgrade to 0.17.1 soon.
Data as of 30 Oct 2026, 11:52 UTC
- EPSS
- 0.2% chance of exploitation in 30 days – higher than 21% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 0.17.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:HExploitation evidence
Disclosed: evidence found.
CVE published 7 Apr 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 30 Oct 2026.
What to do
Upgrade rust-libp2p and libp2p/rust-libp2p to 0.17.1.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| libp2prust-libp2p | Affected
| Fixed in
|
crates.iolibp2p/rust-libp2ppkg:cargo/libp2p/rust-libp2pOther threats | Affected
| Fixed in
|
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
Upgrade rust-libp2p to version 0.17.1 or later, where this vulnerability is fixed. Since the vendor advisory or patch links are not explicitly provided, confirm the upgrade from official rust-libp2p sources. Patch status is not explicitly stated beyond the fix in 0.17.1, so verify the vendor advisory for the latest remediation guidance.
Description
CVE-2026-35457 is a high-severity vulnerability in the rust-libp2p library prior to version 0.17.1. The issue involves the rendezvous server storing pagination cookies without any bounds, allowing an unauthenticated peer to repeatedly send DISCOVER requests and cause unbounded memory growth. This can lead to a denial-of-service condition due to resource exhaustion. The vulnerability is fixed in rust-libp2p version 0.17.1.