How severe is CVE-2023-36299?

CVE-2023-36299 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2023-36299 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (70th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-36299?

CVE-2023-36299 affects Typecho. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-36299?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2023-36299 published?

CVE-2023-36299 was published on 2023-08-03 and last updated on 2026-06-17.

CVE-2023-36299

CVE-2023-36299 is a high-severity vulnerability in Typecho with a CVSS 3.x base score of 8.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-434.

Key facts

Severity: High (CVSS 3.x base score 8.8)
EPSS exploit prediction: 1% (70th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-434
Affected product: Typecho
Published: 2023-08-03
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is CVE-2023-36299?: 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.
How severe is CVE-2023-36299?: CVE-2023-36299 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2023-36299 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (70th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-36299?: CVE-2023-36299 affects Typecho. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-36299?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2023-36299 published?: CVE-2023-36299 was published on 2023-08-03 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:typecho:typecho:1.2.1:-:*:*:*:*:*:*

More vulnerabilities in Typecho

CVE-2023-24114 — Critical (CVSS 9.8): typecho 1.1/17.10.30 was discovered to contain a remote code execution (RCE) vulnerability via install.php.
CVE-2018-18753 — Critical (CVSS 9.8): Typecho V1.1 allows remote attackers to send shell commands via base64-encoded serialized data, as demonstrated by SSRF.
CVE-2024-35540 — Critical (CVSS 9.0): A stored cross-site scripting (XSS) vulnerability in Typecho v1.3.0 allows attackers to execute arbitrary web scripts…
CVE-2023-49967 — High (CVSS 7.5): Typecho v1.2.1 was discovered to be vulnerable to an XML Quadratic Blowup attack via the component…
CVE-2024-35539 — Medium (CVSS 6.5): Typecho v1.3.0 was discovered to contain a race condition vulnerability in the post commenting function. This…
CVE-2024-57369 — Medium (CVSS 6.4): Clickjacking vulnerability in typecho v1.2.1.

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Other CWE-434 (Unrestricted Upload of File with Dangerous Type) vulnerabilities

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CVE-2026-48276 — Critical (CVSS 10.0): ColdFusion versions 2025.9, 2023.20 and earlier are affected by an Unrestricted Upload of File with Dangerous Type…
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CVE-2026-40772 — Critical (CVSS 10.0): Unauthenticated Arbitrary File Upload in GeekyBot <= 1.2.2 versions.
CVE-2026-40412 — Critical (CVSS 10.0): Unrestricted upload of file with dangerous type in Azure Orbital Spatio allows an unauthorized attacker to execute code…

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