CVE-2026-42175 json
requests-hardened: Server-Side Request Forgery (SSRF) in requests-hardened RFC 6598
published 2026-05-05 6 mo ago modified 2026-10-26 13 d ago also GHSA-vh75-fwv3-pqrh , PYSEC-2026-3050 , EUVD-2026-29702
- cvss
- 6.5
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.3%
- EPSS 0.3% chance of exploitation in 30 days, percentile 23%
- public exploits
- 0
- none known
Summary
requests-hardened is a library that overrides the default behaviors of the requests library, and adds new security features. Prior to , the SSRF protection in requests-hardened fails to block IP addresses within the RFC 6598 Shared Address Space (100.64.0.0/10). An attacker who can supply arbitrary URLs to requests-hardened could exploit this gap to access internal services hosted within 100.64.0.0/10. This is for example relevant in environments such as AWS EKS where 100.64.0.0/10 is commonly used as the default pod CIDR. The impact is environment-dependent, deployments that utilize the affected CIDR range for internal networking are exposed to SSRF bypass, while others may not be affected. This vulnerability is fixed in .
Patch / fix
- pypi requests-hardened 1.2.1
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 5 mo ago
Exploit prediction
0.30% chance of exploitation in the next 30 days, higher than 23% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 6.5 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N |
| GitHub | 3.1 | 6.5 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N |
| OSV | 3.1 | 6.5 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| pypi | requests-hardened | <1.2.1 |
1.2.1 |
Affected products
- saleor requests-hardened
Classification
- Weakness
-
- CWE-918 Server-Side Request Forgery
References
-
github.com
/saleor/requests-hardened/commit/a266b3958bb142bca515b3c230fdea19fbda327c
web
-
github.com
/saleor/requests-hardened/commit/b7403f88d3b3689e57435b75b51691a160aaeef5
web
-
github.com
/saleor/requests-hardened/security/advisories/GHSA-vh75-fwv3-pqrh
web
-
github.com
/saleor/requests-hardened/releases/tag/v1.2.1
web
-
nvd.nist.gov
/vuln/detail/CVE-2026-42175
advisory
-
github.com
/saleor/requests-hardened
package
-
pypi.org
/project/requests-hardened
package
-
github.com
/advisories/GHSA-vh75-fwv3-pqrh
advisory
Sources
- CVE List CVE-2026-42175
- GitHub Advisory GHSA-vh75-fwv3-pqrh
- NVD CVE-2026-42175
- OSV PYSEC-2026-3050
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.