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Incorrect type conversion in spatie url-signer URL validation

Priority LOW 31CWE-704Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
—
Confidentiality · integrity · availability
None · None · Low
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA.

Summary

spatie url-signer up to 2.1.3 has an incorrect type conversion (CWE-704) in AbstractUrlSigner::validate when handling the expires argument. A remote, unauthenticated attacker can trigger it without user interaction, with a low impact on availability. A public exploit has been made available.

Written with Claude Haiku 5.5 from the sources below · 2026-11-04

Description from the CNA

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.

Why it matters now

EPSS 0.00419 36th percentileScored 2026-11-07
Fix Fixed url-signer (spatie): 2.1.4

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
spatieurl-signer2.1.0; 2.1.1; 2.1.2; 2.1.32.1.4Patch availableCNA
  • url-signer Vendorspatie Affected 2.1.0; 2.1.1; 2.1.2; 2.1.3 Fixed in 2.1.4 Patch available CNA

CPE names CNA · 1

CPEVersionsRoleVendor
cpe:2.3:a:spatie:url-signer:*:*:*:*:*:*:*:*——spatie
  • cpe:2.3:a:spatie:url-signer:*:*:*:*:*:*:*:* Versions — — ·spatie

Remediation

Upgrade spatie url-signer to version 2.1.4, which fixes the issue. The fix is patch 86af3355388210668f6bfbe9007bd6545d4942ad.

Written with Claude Haiku 5.5 from the sources below · 2026-11-04

  • Fix · CNA url-signer (spatie) Fixed in 2.1.4

Timeline

  1. 2026-11-03 Threatist record created from CVE-2026-121589
  2. 2026-11-04 Alias added: GHSA-p33r-pgmg-6pq6
  3. 2026-11-05 Priority changed: MEDIUM → LOW

References

  • TI-2022-21618 Browsershot 3.57.3 - Server Side XSS to LFR via HTML CVSS 3.1HIGH 8.2
  • TI-2022-21617 Browsershot 3.57.2 - Server Side XSS to LFR via HTML CVSS 3.1HIGH 8.2
  • TI-2022-20098 Browsershot 3.57.2 - Server Side XSS to LFR via URL CVSS 3.1HIGH 8.2
  • TI-2026-63016 spatie Scotty Self Update SelfUpdater.php update code download CVSS 4.0MEDIUM 5.3
  • TI-2026-63015 spatie Scotty Doctor DoctorCommand.php checkRemoteTools os command injection CVSS 4.0MEDIUM 5.3
  • TI-2021-20389 The Spatie media-library-pro library through 1.17.10 and 2.x through 2.1.6 for Laravel… CVSS 3.1CRITICAL 9.8
See all 9 →

Sources