NRDAX-T0327 - Unbounded Registration Storage Exhaustion

Memory amplification · P2P and gossip · no bound · active · first seen 2026-07-10

provenance: Reproduced in NullRabbit's attack-reproduction pipeline

mechanism

CVE-2026-35457 (GHSA-v5hw-cv9c-rpg7): libp2p-rendezvous server stores DISCOVER pagination cookies in an unbounded in-memory map (Registrations::cookies) with no size cap / eviction / expiry - a flood of unauthenticated /rendezvous/1.0.0 DISCOVER requests forces one fresh Cookie + HashSet entry per request → linear memory growth → remote memory exhaustion (fixed in 0.17.1).

live exposure

No exposure data. Slashr ↗ has no risk signal mapped to this technique yet — absence of data is not absence of exposure.

instances (2)

chain	primitive	fidelity	origin	reproducer (bundle)	source
libp2p	libp2p_rendezvous_cookie_exhaustion	lab	reverse-engineered-cve	libp2p_rendezvous_cookie_exhaustion	GHSA-v5hw-cv9c-rpg7 ↗
libp2p	libp2p_rendezvous_namespace_oom	lab	reverse-engineered-cve	libp2p_rendezvous_namespace_oom	GHSA-cqfx-gf56-8x59 ↗

related (Memory amplification)

NRDAX-T0023 - Coalesced Packet Buffer Leak active NRDAX-T0025 - Compact Block Size Integer Overflow active NRDAX-T0038 - Count Underflow Header Serving Amplification active NRDAX-T0042 - Crypto Frame Reassembly Buffer Exhaustion active NRDAX-T0046 - Decompression Bomb Resource Exhaustion active NRDAX-T0059 - Duplicate Transport Parameter Memory Leak active NRDAX-T0061 - Duplicate Tx Mempool Index Desync active NRDAX-T0071 - Ethash Verification Memory Exhaustion active

cite

https://nrdax.com/techniques/NRDAX-T0327

plain

NRDAX Registry. Technique NRDAX-T0327.

bibtex

@misc{nrdax_NRDAX_T0327,
  title = {Unbounded Registration Storage Exhaustion (NRDAX-T0327)},
  howpublished = {NRDAX Registry},
  url = {https://nrdax.com/techniques/NRDAX-T0327},
}

json (csl)

{
  "id": "nrdax-NRDAX-T0327",
  "type": "dataset",
  "title": "Unbounded Registration Storage Exhaustion (NRDAX-T0327)",
  "URL": "https://nrdax.com/techniques/NRDAX-T0327",
  "publisher": "NRDAX Registry"
}

badge

[![NRDAX-T0327 in the NRDAX registry](https://nrdax.com/badge/NRDAX-T0327.svg)](https://nrdax.com/techniques/NRDAX-T0327-unbounded-registration-storage-exhaustion)

use from the CLI

Retrieve or cite this technique from a script or the terminal with the NRDAX Python library & CLI.

Retrieve this technique

nrdax get NRDAX-T0327

Cite it (BibTeX)

nrdax cite NRDAX-T0327 --format bibtex

CLI guide → GitHub ↗