CVE-2020-15123 json
Command injection in codecov (npm package)
published 2020-07-20 6 y ago modified 2026-06-17 4 mo ago also GHSA-xp63-6vf5-xf3v , EUVD-2020-0578
- cvss
- 9.3
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 3.8%
- EPSS 3.8% chance of exploitation in 30 days, percentile 90%
- public exploits
- 0
- none known
Summary
In codecov (npm package) before version 3.7.1 the upload method has a command injection vulnerability. Clients of the codecov-node library are unlikely to be aware of this, so they might unwittingly write code that contains a vulnerability. A similar CVE (CVE-2020-7597 for GHSA-5q88-cjfq-g2mh) was issued but the fix was incomplete. It only blocked &, and command injection is still possible using backticks instead to bypass the sanitizer. The attack surface is low in this case. Particularly in the standard use of codecov, where the module is used directly in a build pipeline, not built against as a library in another application that may supply malicious input and perform command injection.
Patch / fix
- npm codecov 3.7.1
- codecov codecov 3.7.1
- github.com/codecov/codecov-node@c0711c6 commit
- github.com/codecov/codecov-node#180 pull request
Exploit prediction
3.81% chance of exploitation in the next 30 days, higher than 90% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- lgtm.com https://lgtm.com/query/7714424068617023832 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 9.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N |
| NVD | 3.1 | 9.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N |
| NVD | 2.0 | 6.8 | AV:N/AC:M/Au:N/C:P/I:P/A:P |
| GitHub | 3.1 | 9.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| npm | codecov | <3.7.1 |
3.7.1 |
Affected products
- codecov codecov-node
Classification
- Weakness
-
- CWE-78 Improper Neutralization of Special Elements used in an OS Command
References
-
github.com
/codecov/codecov-node/pull/180
web, third-party-advisory
-
github.com
/codecov/codecov-node/commit/c0711c656686e902af2cd92d6aecc8074de4d83d
web, patch, third-party-advisory
-
lgtm.com
/query/7714424068617023832
web, exploit, third-party-advisory
-
github.com
/codecov/codecov-node/security/advisories/GHSA-xp63-6vf5-xf3v
web, third-party-advisory
-
github.com
/advisories/GHSA-5q88-cjfq-g2mh
advisory, third-party-advisory
-
nvd.nist.gov
/vuln/detail/CVE-2020-15123
advisory
Sources
- CVE List CVE-2020-15123
- GitHub Advisory GHSA-xp63-6vf5-xf3v
- NVD CVE-2020-15123
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.