The Kademlia DHT (go-libp2p-kad-dht 0.20.0 and earlier) used in IPFS (0.18.1 and earlier)…
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Tampering
- Confidentiality · integrity · availability
- Low · None · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA and GitHub. Impact type from CWE-352.
Summary
The Kademlia DHT (go-libp2p-kad-dht 0.20.0 and earlier) used in IPFS (0.18.1 and earlier) assigns routing information for content (i.e., information about who holds the content) to be stored by peers whose peer IDs have a small DHT distance from the content ID. This allows an attacker to censor content by generating many Sybil peers whose peer IDs have a small distance from the content ID, thus hijacking the content resolution process.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- 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 |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
| — | github.com/libp2p/go-libp2p-kad-dht (Go) | up to 0.20.0 | — | No fix listed | GHSA-mqr9-hjr8-2m9w |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
- github.com/libp2p/go-libp2p-kad-dht (Go) Vendor— Affected up to 0.20.0 Fixed in — No fix listed GHSA-mqr9-hjr8-2m9w
CPE names CISA-ADP · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:kademila:dht:*:*:*:*:*:*:*:* | — | — | — |
- cpe:2.3:a:kademila:dht:*:*:*:*:*:*:*:* Versions — — ·—
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2023-26248
- 2026-10-03 Alias added: GHSA-mqr9-hjr8-2m9w
References
Sources
- CVE-2023-26248 · CVE Program
- CVE-2023-26248 · NVD
- FIRST EPSS
- GHSA-mqr9-hjr8-2m9w · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences