TI-2026-25434 Aliases CVE-2026-32986 GHSA-9j95-2mq7-rc9w

Textpattern CMS 4.9.0: Second-Order XSS via Atom Feed Injection

MEDIUM 56CWE-116Published 2026-03-20 · Updated 2026-07-14

Key facts

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

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-79.

Summary

Textpattern CMS version 4.9.0 contains a second-order cross-site scripting vulnerability that allows attackers to inject malicious scripts by exploiting improper sanitization of user-supplied input in Atom feed XML elements. Attackers can embed unescaped payloads in parameters such as category that are reflected into Atom fields like and , which execute as JavaScript when feed readers or CMS aggregators consume the feed and insert content into the DOM using unsafe methods.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV

EPSS 0.00166 5th percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by the CNA and NVD

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: Poc
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

Vendor	Product	Affected versions	Fixed in	Status	Source
Textpattern	Textpattern CMS	4.9.0	—	No fix listed	CNA

Textpattern CMS VendorTextpattern Affected 4.9.0 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:textpattern:textpattern:4.9.0:-::::::	4.9.0	Vulnerable	Textpattern

cpe:2.3:a:textpattern:textpattern:4.9.0:-:*:*:*:*:*:* Versions 4.9.0 Vulnerable ·Textpattern

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2026-32986
2026-10-03 Alias added: GHSA-9j95-2mq7-rc9w

References

Exploit 1

Packet Storm listing (Textpattern 4.9.0 Second-Order XSS via Atom Feed Injection)

Other 1

Vendor site

TI-2023-09955 An arbitrary file upload vulnerability in the plugin upload function of Textpattern… CVSS 3.1HIGH 8.8
TI-2023-18162 Directory Traversal vulnerability in Textpattern CMS v4.8.8 allows a remote authenticated… CVSS 3.1HIGH 7.2
TI-2023-11802 An arbitrary file upload vulnerability in the upload plugin of Textpattern v4.8.8 and… CVSS 3.1HIGH 7.2
TI-2018-05387 An issue was discovered in Textpattern CMS 4.6.2 and earlier. CVSS 3.0CRITICAL 9.8
TI-2020-13637 Textpattern 4.7.3 contains an aribtrary file load via the file_insert function in include/txp_file.php. CVSS 3.1CRITICAL 9.8
TI-2021-19813 textpattern 4.8.7 is vulnerable to Cross Site Scripting (XSS) via… CVSS 3.1HIGH 8.3

See all 29 →

Sources

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