CVE-2026-105854 json
Payload: ReDoS in Multipart Content-Type Validation
published last mo. modified 26d ago also EUVD-2026-93498 , GHSA-2g7p-5934-q4w7
- cvss
- 7.5
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.4%
- EPSS 0.4% chance of exploitation in 30 days, percentile 29%
- public exploits
- 0
- none known
Summary
Payload is a free and open source headless content management system. In versions from 3.0.0 before 3.90.0 and canary versions before 4.0.0-canary.34, a malformed multipart request body can cause multipart Content-Type processing to take an extremely long time, resulting in uncontrolled resource consumption. This issue is fixed in versions 3.90.0 and 4.0.0-canary.34.
Patch / fix
- npm payload 3.90.0, 4.0.0-canary.34
- payloadcms payload 3.90.0, 4.0.0-canary.34
Is CVE-2026-105854 in your dependencies? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.
Check with FencerCISA SSVC
- Exploitation
- none
- Automatable
- yes
- Technical impact
- partial
- Assessed
- last mo.
Exploit prediction
0.35% chance of exploitation in the next 30 days, higher than 29% of all scored CVEs (FIRST EPSS, 2026-11-09).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 8.7 | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N |
| CNA | 4.0 | 8.7 | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/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 |
| NVD | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| npm | payload | >=3.0.0, <3.90.0 >=4.0.0-canary.0, <4.0.0-canary.34 |
3.90.0 4.0.0-canary.34 |
Affected products
- payloadcms payload
Classification
References
-
github.com
/payloadcms/payload/commit/0084bd51fb7742b26a88431bb84cb1696857e6dc
web, patch
-
github.com
/payloadcms/payload/releases/tag/v3.90.0
web, patch, release-notes
-
github.com
/payloadcms/payload/security/advisories/GHSA-2g7p-5934-q4w7
web, vendor-advisory
-
github.com
/payloadcms/payload
package
Sources
- CVE List CVE-2026-105854
- GitHub Advisory GHSA-2g7p-5934-q4w7
- NVD CVE-2026-105854
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.