CVE-2020-36629 json
SimbCo httpster server.coffee fs.realpathSync path traversal
published 3y ago modified 4mo ago also GHSA-p8j8-wxvp-h695 , EUVD-2022-7703
- cvss
- 5.5
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.9%
- EPSS 0.9% chance of exploitation in 30 days, percentile 60%
- public exploits
- 0
- none known
Summary
A vulnerability classified as critical was found in SimbCo httpster. This vulnerability affects the function fs.realpathSync of the file src/server.coffee. The manipulation leads to path traversal. The exploit has been disclosed to the public and may be used. The name of the patch is d3055b3e30b40b65d30c5a06d6e053dffa7f35d0. It is recommended to apply a patch to fix this issue. The identifier of this vulnerability is VDB-216748.
Patch / fix
- npm httpster 1.1.0
- httpster_project httpster 2020-11-19
- github.com/SimbCo/httpster@d3055b3 commit
- github.com/SimbCo/httpster#36 pull request
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Check with FencerCISA SSVC
- Exploitation
- Proof of concept is public
- Automatable
- no
- Technical impact
- partial
- Assessed
- last yr.
Exploit prediction
0.90% chance of exploitation in the next 30 days, higher than 60% of all scored CVEs (FIRST EPSS, 2026-11-09).
Exploits and checks
- github.com https://github.com/SimbCo/httpster/pull/36 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 5.5 | CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L |
| CNA | 3.0 | 5.5 | CVSS:3.0/AV:A/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L |
| NVD | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |
| GitHub | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| npm | httpster | <1.1.0 |
1.1.0 |
Affected products
- SimbCo httpster
Classification
- Weakness
-
- CWE-22 Improper Limitation of a Pathname to a Restricted Directory
References
-
github.com
/SimbCo/httpster/pull/36
exploit, web, patch, third-party-advisory
-
github.com
/SimbCo/httpster/commit/d3055b3e30b40b65d30c5a06d6e053dffa7f35d0
mitigation, patch, web, third-party-advisory
-
vuldb.com
/?id.216748
technical-description, vdb-entry, web, third-party-advisory
-
nvd.nist.gov
/vuln/detail/CVE-2020-36629
advisory
-
github.com
/SimbCo/httpster
package
Sources
- CVE List CVE-2020-36629
- GitHub Advisory GHSA-p8j8-wxvp-h695
- NVD CVE-2020-36629
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.