GHSA-373w-rj84-pv6x
SafeURL-Python's hostname blocklist does not block FQDNs
GHSA-373w-rj84-pv6x is a vulnerability with no CVSS score yet in safeurl-python, published June 29, 2023. No source lists public exploit code. Fixed in safeurl-python 1.3.
- Severity
- UnratedNo CVSS score yet
- Exploit chance
- UnscoredNo EPSS score yet
- Exploitation
- None knownNot on CISA’s or ENISA’s lists
- Fixed in
1.3safeurl-python +1 more
Description
Description
If a hostname was blacklisted, it was possible to bypass the blacklist by requesting the FQDN of the host (e.g. adding . to the end).
Impact
The main purpose of this library is to block requests to internal/private IPs and these cannot be bypassed using this finding. But if a library user had specifically set certain hostnames as blocked, then an attacker would be able to circumvent that block to cause SSRFs to request those hostnames.
Patches
Fixed by https://github.com/IncludeSecurity/safeurl-python/pull/6
Credit
Affected packages
| Package | Affected | Fixed |
|---|---|---|
safeurl-pythonPyPI | before 1.3 | 1.3 |
safeurl-pythonPyPI | before 1.3, plus listed versions 1.01.2 | 1.3 |
What each source reports
GitHub AdvisoriesNo score
SafeURL-Python's hostname blocklist does not block FQDNs
Description
If a hostname was blacklisted, it was possible to bypass the blacklist by requesting the FQDN of the host (e.g. adding . to the end).
Impact
The main purpose of this library is to block requests to internal/private IPs and these cannot be bypassed using this finding. But if a library user had specifically set certain hostnames as blocked, then an attacker would be able to circumvent that block to cause SSRFs to request those hostnames.
Patches
Fixed by https://github.com/IncludeSecurity/safeurl-python/pull/6
Credit
- Record
GHSA-373w-rj84-pv6x- Updated
- 2026-11-02
OSVNo score
SafeURL-Python's hostname blocklist does not block FQDNs
Description
If a hostname was blacklisted, it was possible to bypass the blacklist by requesting the FQDN of the host (e.g. adding . to the end).
Impact
The main purpose of this library is to block requests to internal/private IPs and these cannot be bypassed using this finding. But if a library user had specifically set certain hostnames as blocked, then an attacker would be able to circumvent that block to cause SSRFs to request those hostnames.
Patches
Fixed by https://github.com/IncludeSecurity/safeurl-python/pull/6
Credit
- Record
GHSA-373w-rj84-pv6x- Updated
- 2026-11-02
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | GitHub Advisories, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
References
github.com/IncludeSecurity/safeurl-python/security/advisories/GHSA-373w-rj84-pv6x