CVE-2022-0748 json
Arbitrary Code Execution
published 2022-03-17 4 y ago modified 2026-07-08 4 mo ago also GHSA-66ww-999q-mffq , EUVD-2022-1336
- cvss
- 9.8
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 2.1%
- EPSS 2.1% chance of exploitation in 30 days, percentile 81%
- public exploits
- 0
- none known
Summary
The package post-loader from 0.0.0 are vulnerable to Arbitrary Code Execution which uses a markdown parser in an unsafe way so that any javascript code inside the markdown input files gets evaluated and executed.
Exploit prediction
2.09% chance of exploitation in the next 30 days, higher than 81% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- snyk.io https://snyk.io/vuln/SNYK-JS-POSTLOADER-2403737 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVD | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 7.5 | AV:N/AC:L/Au:N/C:P/I:P/A:P |
| GitHub | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| npm | post-loader | >=0.0.0 |
no fix listed |
Affected products
- n/a post-loader
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
References
-
snyk.io
/vuln/SNYK-JS-POSTLOADER-2403737
web, exploit, third-party-advisory
-
nvd.nist.gov
/vuln/detail/CVE-2022-0748
advisory
-
github.com
/egoist/post-loader
package
Sources
- CVE List CVE-2022-0748
- GitHub Advisory GHSA-66ww-999q-mffq
- NVD CVE-2022-0748
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.