What is CVE-2024-35540?

CVE-2024-35540 is a critical-severity vulnerability in Typecho, classified under Cross-site Scripting. CVSS score: 9.0/10. Published 2024-08-20.

How severe is CVE-2024-35540?

Critical severity. CVSS v3 base score is 9.0 out of 10.

Is CVE-2024-35540 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

XSS in Typecho

CVE-2024-35540

A stored cross-site scripting (XSS) vulnerability in Typecho v1.3.0 allows attackers to execute arbitrary web scripts or HTML via a crafted payload.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2024-08-20 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.0 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.028 (86.1th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 86th percentile — 86.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.028 · newest: 0.028 · change: 0.000

Affected products

Typecho — versions 1.3.0

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

Public proof-of-concept exploits

cyberaz0r/Typecho-Multiple-Vulnerabilities

References

cyberaz0r.info/2024/08/typecho-multiple-vulnerabilities/ (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2024-35540?: CVE-2024-35540 is a critical-severity vulnerability in Typecho, classified under Cross-site Scripting. CVSS score: 9.0/10. Published 2024-08-20.
How severe is CVE-2024-35540?: Critical severity. CVSS v3 base score is 9.0 out of 10.
Is CVE-2024-35540 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.