An arbitrary file upload vulnerability in the upload plugin of Textpattern v4.8.8 and…
Priority HIGH 67CWE-434Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- High
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-434.
Summary
An arbitrary file upload vulnerability in the upload plugin of Textpattern v4.8.8 and below allows attackers to execute arbitrary code by uploading a crafted PHP file.
Why it matters now
Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.01994 80th percentileScored 2026-11-07
Public exploit Yes 2 exploit referencesTagged by 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
- Total
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 |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:textpattern:textpattern:*:*:*:*:*:*:*:* | up to 4.8.8 | Vulnerable | Textpattern |
- cpe:2.3:a:textpattern:textpattern:*:*:*:*:*:*:*:* Versions up to 4.8.8 Vulnerable ·Textpattern
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2023-26852
- 2026-10-03 Alias added: GHSA-3fg2-9c6w-hcpg
References
More Textpattern vulnerabilities
- 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-2026-25434 Textpattern CMS 4.9.0: Second-Order XSS via Atom Feed Injection CVSS 4.0MEDIUM 5.1
- 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
Sources
- CVE-2023-26852 · CVE Program
- CVE-2023-26852 · NVD
- FIRST EPSS
- GHSA-3fg2-9c6w-hcpg · GitHub Advisory Database · CC BY 4.0
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