CVE-2021-21412 json
[thi.ng/egf] Potential arbitrary code execution of `#gpg`-tagged property values
published 5y ago modified 4mo ago also GHSA-rj44-gpjc-29r7 , EUVD-2021-0870
- cvss
- 6.4
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.3%
- EPSS 1.3% chance of exploitation in 30 days, percentile 71%
- public exploits
- 0
- none known
Summary
Potential for arbitrary code execution in npm package @thi.ng/egf `#gpg`-tagged property values (only if `decrypt: true` option is enabled). PR with patch has been submitted and will has been released as of v0.4.0 By default the EGF parse functions do NOT attempt to decrypt values (since GPG only available in non-browser env). However, if GPG encrypted values are used/required: 1. Perform a regex search for `#gpg`-tagged values in the EGF source file/string and check for backtick (\`) chars in the encrypted value string 2. Replace/remove them or skip parsing if present.
Patch / fix
- npm @thi.ng/egf 0.4.0
- @thi.ng/egf_project @thi.ng/egf 0.4.0
Is CVE-2021-21412 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 FencerExploit prediction
1.34% chance of exploitation in the next 30 days, higher than 71% of all scored CVEs (FIRST EPSS, 2026-11-09).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 6.4 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N |
| NVD | 3.1 | 8.8 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 6.5 | AV:N/AC:L/Au:S/C:P/I:P/A:P |
| GitHub | 3.1 | 6.4 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| npm | @thi.ng/egf | <0.4.0 |
0.4.0 |
Affected products
- thi-ng egf
Classification
- Weakness
-
- CWE-78 Improper Neutralization of Special Elements used in an OS Command
References
-
github.com
/thi-ng/umbrella/commit/88f61656e5f5cfba960013b8133186389efaf243
web, patch, third-party-advisory
-
github.com
/thi-ng/umbrella/security/advisories/GHSA-rj44-gpjc-29r7
web, patch, third-party-advisory
-
github.com
/thi-ng/umbrella/blob/develop/packages/egf/CHANGELOG.md#040-2021-03-27
web, release-notes, third-party-advisory
- npmjs.com /package/%40thi.ng/egf
-
nvd.nist.gov
/vuln/detail/CVE-2021-21412
advisory
-
npmjs.com
/package/@thi.ng/egf
web
Sources
- CVE List CVE-2021-21412
- GitHub Advisory GHSA-rj44-gpjc-29r7
- NVD CVE-2021-21412
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.