How severe is CVE-2025-56264?

CVE-2025-56264 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2025-56264 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (30th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-56264?

CVE-2025-56264 affects Zhyd Oneblog. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-56264?

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.

Does CVE-2025-56264 have an EU (EUVD) identifier?

Yes. CVE-2025-56264 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-29651.

When was CVE-2025-56264 published?

CVE-2025-56264 was published on 2025-09-16 and last updated on 2026-06-17.

CVE-2025-56264

CVE-2025-56264 is a high-severity vulnerability in Zhyd Oneblog with a CVSS 3.x base score of 7.5. 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-400.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 0% (30th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-29651
Weakness: CWE-400
Affected product: Zhyd Oneblog
Published: 2025-09-16
Last modified: 2026-06-17

Description

The /api/comment endpoint in zhangyd-c OneBlog 2.3.9 contains a denial-of-service vulnerability.

Frequently asked questions

What is CVE-2025-56264?: The /api/comment endpoint in zhangyd-c OneBlog 2.3.9 contains a denial-of-service vulnerability.
How severe is CVE-2025-56264?: CVE-2025-56264 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2025-56264 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (30th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-56264?: CVE-2025-56264 affects Zhyd Oneblog. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-56264?: 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.
Does CVE-2025-56264 have an EU (EUVD) identifier?: Yes. CVE-2025-56264 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-29651.
When was CVE-2025-56264 published?: CVE-2025-56264 was published on 2025-09-16 and last updated on 2026-06-17.

References

https://github.com/echo0d/vulnerability/blob/main/zhangyd-c_OneBlog/DoS.md

Affected products (1)

cpe:2.3:a:zhyd:oneblog:2.3.9:*:*:*:*:*:*:*

More vulnerabilities in Zhyd Oneblog

CVE-2025-60355 — Critical (CVSS 9.8): zhangyd-c OneBlog v2.3.9 and before was vulnerable to SSTI (Server-Side Template Injection) via FreeMarker templates.
CVE-2024-54954 — High (CVSS 8.0): OneBlog v2.3.6 was discovered to contain a template injection vulnerability via the template management department.
CVE-2022-34012 — Medium (CVSS 6.5): Insecure permissions in OneBlog v2.3.4 allows low-level administrators to reset the passwords of high-level…
CVE-2024-29473 — Medium (CVSS 6.1): OneBlog v2.3.4 was discovered to contain a stored cross-site scripting (XSS) vulnerability via the Role Management…
CVE-2024-29470 — Medium (CVSS 6.1): OneBlog v2.3.4 was discovered to contain a stored cross-site scripting (XSS) vulnerability via the component…
CVE-2024-29469 — Medium (CVSS 6.1): A stored cross-site scripting (XSS) vulnerability in OneBlog v2.3.4 allows attackers to execute arbitrary web scripts…

All CVEs affecting Zhyd Oneblog →

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