CVE-2021-27940 json
openark/orchestrator cross-site scripting vulnerability
published 2021-03-03 5 y ago modified 2026-06-17 4 mo ago also GHSA-752c-vfpf-cp2w , EUVD-2022-2918
- cvss
- 6.1
- 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 69%
- public exploits
- 0
- none known
Summary
resources/public/js/orchestrator.js in openark orchestrator before 3.2.4 allows XSS via the orchestrator-msg parameter.
Patch / fix
- go github.com/openark/orchestrator 3.2.4
- openark orchestrator 3.2.4
Exploit prediction
1.24% chance of exploitation in the next 30 days, higher than 69% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- youtube.com https://www.youtube.com/watch?v=DOYm0DIS3Us referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 6.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
| NVD | 2.0 | 4.3 | AV:N/AC:M/Au:N/C:N/I:P/A:N |
| GitHub | 3.1 | 6.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| go | github.com/openark/orchestrator | <3.2.4 |
3.2.4 |
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
References
-
github.com
/openark/orchestrator/pull/1313
web, patch, third-party-advisory
-
github.com
/openark/orchestrator/commit/76ceb6b0e013e1e815eb008dec90295860b06cf3
web
-
youtube.com
/watch?v=DOYm0DIS3Us
exploit, third-party-advisory
-
github.com
/openark/orchestrator/releases/tag/v3.2.4
web, release-notes, third-party-advisory
-
nvd.nist.gov
/vuln/detail/CVE-2021-27940
advisory
Sources
- CVE List CVE-2021-27940
- GitHub Advisory GHSA-752c-vfpf-cp2w
- NVD CVE-2021-27940
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