How severe is CVE-2025-5509?

CVE-2025-5509 has a CVSS 3.x base score of 6.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.

Is CVE-2025-5509 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (44th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-5509?

CVE-2025-5509 affects Quequnlong Shiyi-blog. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-5509?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2025-5509 have an EU (EUVD) identifier?

Yes. CVE-2025-5509 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-16753.

When was CVE-2025-5509 published?

CVE-2025-5509 was published on 2025-06-03 and last updated on 2026-06-17.

CVE-2025-5509

CVE-2025-5509 is a medium-severity vulnerability in Quequnlong Shiyi-blog with a CVSS 3.x base score of 6.3. 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-22.

Key facts

Severity: Medium (CVSS 3.x base score 6.3)
CVSS v2: 6.5
CVSS v4: 5.3
EPSS exploit prediction: 1% (44th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-16753
Weakness: CWE-22
Affected product: Quequnlong Shiyi-blog
Published: 2025-06-03
Last modified: 2026-06-17

Description

A vulnerability classified as critical has been found in quequnlong shiyi-blog up to 1.2.1. This affects an unknown part of the file /api/file/upload. The manipulation of the argument file/source leads to path traversal. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

Frequently asked questions

What is CVE-2025-5509?: A vulnerability classified as critical has been found in quequnlong shiyi-blog up to 1.2.1. This affects an unknown part of the file /api/file/upload. The manipulation of the argument file/source leads to path traversal. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
How severe is CVE-2025-5509?: CVE-2025-5509 has a CVSS 3.x base score of 6.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.
Is CVE-2025-5509 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (44th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-5509?: CVE-2025-5509 affects Quequnlong Shiyi-blog. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-5509?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-5509 have an EU (EUVD) identifier?: Yes. CVE-2025-5509 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-16753.
When was CVE-2025-5509 published?: CVE-2025-5509 was published on 2025-06-03 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:quequnlong:shiyi-blog:*:*:*:*:*:*:*:*

More vulnerabilities in Quequnlong Shiyi-blog

CVE-2025-5512 — High (CVSS 7.3): A vulnerability, which was classified as critical, was found in quequnlong shiyi-blog up to 1.2.1. Affected is an…
CVE-2025-12305 — Medium (CVSS 6.3): A vulnerability was found in quequnlong shiyi-blog up to 1.2.1. This impacts an unknown function of the file…
CVE-2025-5510 — Medium (CVSS 6.3): A vulnerability classified as critical was found in quequnlong shiyi-blog up to 1.2.1. This vulnerability affects…
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CVE-2025-5513 — Low (CVSS 3.5): A vulnerability has been found in quequnlong shiyi-blog up to 1.2.1 and classified as problematic. Affected by this…

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