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TI-2021-03160 Aliases CVE-2021-4302GHSA-6629-529f-2h95

slackero phpwcms SVG File cross site scripting

Priority LOW 28CWE-79Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
Cross-site scripting
Confidentiality · integrity · availability
Low · Low · None
Fix status
No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-79.

Summary

A vulnerability was found in slackero phpwcms up to 1.9.26. It has been classified as problematic. This affects an unknown part of the component SVG File Handler. The manipulation leads to cross site scripting. It is possible to initiate the attack remotely. Upgrading to version 1.9.27 is able to address this issue. The patch is named b39db9c7ad3800f319195ff0e26a0981395b1c54. It is recommended to upgrade the affected component. The associated identifier of this vulnerability is VDB-217419.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00576 47th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
slackerophpwcms1.9.0; 1.9.1; 1.9.2; 1.9.3; 1.9.4; 1.9.5; 1.9.6; 1.9.7; 1.9.8; 1.9.9; 1.9.10; 1.9.11; 1.9.12; 1.9.13; 1.9.14; 1.9.15; 1.9.16; 1.9.17; 1.9.18; 1.9.19; 1.9.20; 1.9.21; 1.9.22; 1.9.23; 1.9.24; 1.9.25; 1.9.26—No fix listedCNA
  • phpwcms Vendorslackero Affected 1.9.0; 1.9.1; 1.9.2; 1.9.3; 1.9.4; 1.9.5; 1.9.6; 1.9.7; 1.9.8; 1.9.9; 1.9.10; 1.9.11; 1.9.12; 1.9.13; 1.9.14; 1.9.15; 1.9.16; 1.9.17; 1.9.18; 1.9.19; 1.9.20; 1.9.21; 1.9.22; 1.9.23; 1.9.24; 1.9.25; 1.9.26 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:phpwcms:phpwcms:*:*:*:*:*:*:*:*before 1.9.27Vulnerableslackero
  • cpe:2.3:a:phpwcms:phpwcms:*:*:*:*:*:*:*:* Versions before 1.9.27 Vulnerable ·slackero

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-4302
  2. 2026-10-03 Alias added: GHSA-6629-529f-2h95

References

Patch 2

  • TI-2021-14759 An issue discovered in phpwcms 1.9.25 allows remote attackers to run arbitrary code via… CVSS 3.1CRITICAL 9.8
  • TI-2021-14761 File Upload vulnerability in phpwcms 1.9.25 allows remote attackers to run arbitrary code… CVSS 3.1HIGH 8.8
  • TI-2025-04939 slackero phpwcms image_resized.php getimagesize deserialization CVSS 4.0MEDIUM 6.9
  • TI-2021-14760 Directory traversal vulnerability in phpcms 1.9.25 allows remote attackers to delete… CVSS 3.1MEDIUM 5.4
  • TI-2025-04937 slackero phpwcms Feedimport processing.inc.php deserialization CVSS 4.0MEDIUM 5.3
  • TI-2021-22399 Phpwcms 1.9.30 - Arbitrary File Upload CVSS 4.0MEDIUM 5.3
See all 18 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences