CVE-2024-35540: A stored cross-site scripting (XSS) vulnerability in Typecho v1.3.0 allows attackers to execute arbitrary web

Q: How do I fix CVE-2024-35540?

typecho: upgrade to newer than 1.2.1. Exact commands for each OS are on this page.

Q: Is CVE-2024-35540 being exploited?

CVE-2024-35540 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2024-35540 affect?

CVE-2024-35540 affects typecho. Severity is critical (CVSS 9.0). 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.

Q: How urgent is CVE-2024-35540?

Priority 58/100. Critical severity; Public exploit reference

This month

CRITICAL 9.0UPGRADE

CVE-2024-35540 is a critical-severity flaw (CVSS 9.0) affecting typecho. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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.

Why this priority

Critical severity
Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	9.0 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	Required
EPSS exploit chance	2.8% (top 13%)
CISA exploited list	No
Weakness	CWE-79
Published	2024-08-20
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: typecho

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2024-08-20 15:15 UTCPublished CVE record published
2026-06-17 07:34 UTCUpdated Record last modified

typecho typecho UPGRADE

Affected: <= 1.2.1 · 1.3.0 alpha

Fixed in: newer than 1.2.1

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy typecho || rpm -q typecho || typecho --version

2. UPGRADE to newer than 1.2.1 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade typecho

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade typecho

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

Exploit-DB: Typecho 1.3.0 - Stored Cross-Site Scripting (XSS)

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2024-35540?

typecho: upgrade to newer than 1.2.1. Exact commands for each OS are on this page.

Is CVE-2024-35540 being exploited?

CVE-2024-35540 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2024-35540 affect?

CVE-2024-35540 affects typecho. Severity is critical (CVSS 9.0). 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.

How urgent is CVE-2024-35540?

Priority 58/100. Critical severity; Public exploit reference

Related CVEs

CVE-2024-57369 MEDIUM 6.4 DOWNGRADE Clickjacking vulnerability in typecho v1.2.1.
CVE-2024-46494 MEDIUM 5.4 DOWNGRADE A cross-site scripting (XSS) vulnerability in Typecho v1.2.1 allows attackers to execute arbitrary web scripts
CVE-2024-35539 MEDIUM 6.5 DOWNGRADE Typecho v1.3.0 was discovered to contain a race condition vulnerability in the post commenting function
CVE-2024-35538 MEDIUM 5.3 DOWNGRADE Typecho v1.3.0 was discovered to contain a Client IP Spoofing vulnerability, which allows attackers to falsify

References

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