CVE-2026-22863 json
Deno node:crypto doesn't finalize cipher
published 2026-01-15 9 mo ago modified 2026-07-18 3 mo ago also EUVD-2026-2936 , GHSA-5379-f5hf-w38v , JLSEC-2026-114
- cvss
- 7.5
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.2%
- EPSS 0.2% chance of exploitation in 30 days, percentile 10%
- public exploits
- 0
- none known
Summary
Deno is a JavaScript, TypeScript, and WebAssembly runtime. Before 2.6.0, node:crypto doesn't finalize cipher. The vulnerability allows an attacker to have infinite encryptions. This can lead to naive attempts at brute forcing, as well as more refined attacks with the goal to learn the server secrets. This vulnerability is fixed in 2.6.0.
Patch / fix
- crates.io deno 2.6.0
- julia Deno_jll 2.6.3+0
- deno deno 2.6.0
CISA SSVC
- Exploitation
- none
- Automatable
- yes
- Technical impact
- partial
- Assessed
- 9 mo ago
Exploit prediction
0.20% chance of exploitation in the next 30 days, higher than 10% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- github.com https://github.com/denoland/deno/security/advisories/GHSA-5379-f5hf-w38v referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 9.2 | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N |
| CNA | 4.0 | 9.2 | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:H/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:H/I:N/A:N |
| OSV | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| crates.io | deno | <2.6.0 |
2.6.0 |
| julia | Deno_jll | <2.6.3+0 |
2.6.3+0 |
Affected products
- denoland deno
Classification
- Weakness
-
- CWE-325 Missing Cryptographic Step
References
-
github.com
/denoland/deno/security/advisories/GHSA-5379-f5hf-w38v
web, exploit, vendor-advisory
-
github.com
/denoland/deno/releases/tag/v2.6.0
web, release-notes
-
nvd.nist.gov
/vuln/detail/CVE-2026-22863
advisory, web
-
github.com
/denoland/deno
package
-
github.com
/advisories/GHSA-5379-f5hf-w38v
web
Sources
- CVE List CVE-2026-22863
- GitHub Advisory GHSA-5379-f5hf-w38v
- NVD CVE-2026-22863
- OSV JLSEC-2026-114
Fencer Vulns 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.