CVE-2026-118690 json
Signal K Server before 2.33.0 Missing Authentication via /skServer/ziplogs
published 12d ago modified 11d ago also EUVD-2026-112491
- cvss
- 9.8
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.7%
- EPSS 0.7% chance of exploitation in 30 days, percentile 52%
- public exploits
- 0
- none known
Summary
Signal K Server before 2.33.0 contains a missing authentication vulnerability that allows unauthenticated remote attackers to download log archives via the /skServer/ziplogs endpoint. Attackers can extract the JWT secretKey from security.json in the ZIP, forge administrator tokens, and create persistent admin accounts for full server control.
Patch / fix
- SignalK signalk-server 2.33.0
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- Exploitation
- none
- Automatable
- yes
- Technical impact
- total
- Assessed
- 11d ago
Exploit prediction
0.69% chance of exploitation in the next 30 days, higher than 52% of all scored CVEs (FIRST EPSS, 2026-11-09).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 9.3 | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N |
| CNA | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| CNA | 4.0 | 9.3 | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X |
Affected products
- SignalK signalk-server
Classification
- Weakness
-
- CWE-306 Missing Authentication for Critical Functionality
References
-
github.com
/SignalK/signalk-server/commit/728bab82742d16c54e50525b95dc9b6e32396107
patch
-
github.com
/SignalK/signalk-server/security/advisories/GHSA-4w32-qx5g-cpwv
vendor-advisory
-
github.com
/SignalK/signalk-server
product
-
github.com
/SignalK/signalk-server/blob/v2.32.0/src/interfaces/logfiles.js#L30-L91
technical-description
-
github.com
/SignalK/signalk-server/releases/tag/v2.33.0
release-notes
-
vulncheck.com
/advisories/signal-k-server-before-2.33.0-missing-authentication-via-skserver-ziplogs
third-party-advisory
Sources
- CVE List CVE-2026-118690
- NVD CVE-2026-118690
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.
CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.