spatie url-signer URL Validation AbstractUrlSigner.php validate type conversion
Written by anthropic/claude-haiku-5.5 from the sources below. Verify against them.
- Exploited
- No known exploitation
- Fix
- Fix or patch referenced
- Who is exposed
- Not reported
Do first: Apply the patch listed under Evidence.
- Exploitation?/40Exploitation: unknown (data gap). No CISA SSVC exploitation rating yet
- Exposure17/25No login or user action needed per the CVSS vector, reachable over the network without a login · Data gap: No advisory context yet
- Reach?/20Reach: unknown (data gap). No tracked technology or package matched
- Severity6.9/10CVSS 6.9
- No patch0/5No signal
What would change the score
- Would score about 69 if added to CISA KEV
- Would score about 64 if CISA's SSVC rates exploitation active
- Would score about 29 if advisories confirm default setups are exposed
CVE-2026-121589 is not in CISA's Known Exploited Vulnerabilities (KEV) catalog. No public exploit code is tracked. It is rated CVSS 6.9 (medium) and affects url-signer; a fix or patch is referenced.
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- Published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- A 0-100 score for how much a CVE matters across the industry: exploitation, exposure, how widely the software is used, severity and whether a fix exists.What do these mean? →
- 24/100 · provisional
- Fix
- Fix or patch referenced
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
Summary
The spatie url-signer PHP library, used to generate and validate signed URLs, is affected by this flaw in its URL validation logic. An attacker can remotely supply crafted expiration values that are converted to the wrong type, which can allow forged or improperly validated signed URLs to be accepted.
Read the original description
A weakness has been identified in spatie url-signer up to 2.1.3. Affected is the function AbstractUrlSigner::validate of the file AbstractUrlSigner.php of the component URL Validation. This manipulation of the argument expires causes incorrect type conversion. It is possible to initiate the attack remotely. The exploit has been made available to the public and could be used for attacks. Upgrading to version 2.1.4 is able to address this issue. Patch name: 86af3355388210668f6bfbe9007bd6545d4942ad. It is recommended to upgrade the affected component.
What to do
Apply the patch listed under Evidence.
Timeline
- CVE published
- First seen by cve.now
Affected versions
- spatie url-signer
2.1.0, 2.1.1, 2.1.2, 2.1.3
Evidence 7
- Advisory
- Advisory
- Advisory
- Advisory
- Patch
Show all 7 sourcesShow fewer sources
- Patch
- Repository
Corrections
None so far.
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Questions about CVE-2026-121589
Is CVE-2026-121589 being exploited?
It is not in CISA's Known Exploited Vulnerabilities catalog, and CISA's SSVC assessment does not mark exploitation as active. That does not mean it has not been attacked: vendors and researchers can report attacks before CISA lists them. No public exploit code is tracked.Source: cve.now feed data
Which versions are affected by CVE-2026-121589?
url-signer: versions 2.1.0, 2.1.1, 2.1.2, 2.1.3.Source: cve.now feed data