CVE-2021-41959 json
JerryScript Git version 14ff5bf does not sufficiently track and release allocated memory via jerry-core/ecma/operations/ecma-regexp-object.…
published 2022-05-03 4 y ago modified 2026-06-17 4 mo ago also EUVD-2021-28952
- cvss
- 7.5
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.2%
- EPSS 1.2% chance of exploitation in 30 days, percentile 68%
- public exploits
- 0
- none known
Summary
JerryScript Git version 14ff5bf does not sufficiently track and release allocated memory via jerry-core/ecma/operations/ecma-regexp-object.c after RegExp, which causes a memory leak.
Patch / fix
- github.com/jerryscript-project/jerryscript#4787 pull request
Exploit prediction
1.19% chance of exploitation in the next 30 days, higher than 68% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- github.com https://github.com/jerryscript-project/jerryscript/pull/4787 referenced PoC, tagged "exploit" by a source, unverified
- github.com https://github.com/jerryscript-project/jerryscript/issues/4781 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| NVD | 2.0 | 5.0 | AV:N/AC:L/Au:N/C:N/I:N/A:P |
Classification
- Weakness
-
- CWE-401 Missing Release of Memory after Effective Lifetime
References
-
github.com
/jerryscript-project/jerryscript/pull/4787
exploit, issue-tracking, patch, third-party-advisory
-
github.com
/jerryscript-project/jerryscript/issues/4781
exploit, issue-tracking, third-party-advisory
Sources
- CVE List CVE-2021-41959
- NVD CVE-2021-41959
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