CVE-2023-36299
Typecho 1.2.1
Raw vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HCVSS and EPSS are reproduced from their sources (NVD, FIRST EPSS). Risk Priority is our own derived reading, not an NVD score.
Summary
CVE-2023-36299 is a high-severity Unrestricted Upload of File with Dangerous Type (CWE-434) vulnerability in Typecho Typecho. Its CVSS base score is 8.8 (High).
Operationally, exploitation aligns with the MITRE ATT&CK technique Data Obfuscation (T1001); ranked in the top 22% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
Deeper analysis AI-assisted summary
Synthesised by an AI model from the NVD description and linked references — a reading aid, not an authoritative source.
Typecho version 1.2.1 contains a file upload vulnerability that permits remote code execution. The flaw is triggered through the upload and options-general parameters in index.php and is tracked under CWE-434 for unrestricted upload of files with dangerous types. The issue received a CVSS 3.1 score of 8.8, reflecting network attack vector, low complexity, and low-privileged access requirements.
An authenticated attacker with low privileges can upload a crafted file via the affected parameters and subsequently execute arbitrary code on the server, achieving full confidentiality, integrity, and availability impact.
Public proof-of-concept code has been published on GitHub, and the EPSS score has remained steady at 0.1190 with no material increase after disclosure. The referenced Typecho release page corresponds to the vulnerable version without indicating an available patch.
OWASP Top 10 for Web (2025)
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2023-40269
Vulnerability Data
A File Upload vulnerability in typecho v.1.2.1 allows a remote attacker to execute arbitrary code via the upload and options-general parameters in index.php.
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise Techniques
CVEs Like This One
Affected Assets
Mitigating Controls
Control response
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V5.1.1
Likely Mitigating Controls AI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
Requiring identifiable owners for portable devices reduces the attack surface for unrestricted uploads of dangerous file types via anonymous media.
Dangerous file uploads can be detonated in the chamber to determine malice before any production write or execution occurs.
Prevents unrestricted writing of arbitrary or malicious firmware by keeping hardware write-protect enabled except under tightly controlled manual procedures.
Scans files from external sources on download/open/execute, blocking unrestricted uploads of dangerous file types.
Mitigating Controls (NIST CSF 2.0) AI
Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.
Hardened configuration baselines can enforce allowed file types and processing rules.
Restricting execution of unauthorized software directly blocks dangerous uploaded files from running.
Secure development practices include input validation and file-type restrictions that prevent this weakness.
Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI
Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.