How severe is CVE-2025-52552?

CVE-2025-52552 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2025-52552 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (14th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-52552?

CVE-2025-52552 affects Fastgpt. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-52552?

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

Does CVE-2025-52552 have an EU (EUVD) identifier?

Yes. CVE-2025-52552 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-18916.

When was CVE-2025-52552 published?

CVE-2025-52552 was published on 2025-06-21 and last updated on 2026-06-17.

CVE-2025-52552

CVE-2025-52552 is a medium-severity vulnerability in Fastgpt with a CVSS 3.x base score of 6.1. 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-79.

Key facts

Severity: Medium (CVSS 3.x base score 6.1)
CVSS v4: 5.5
EPSS exploit prediction: 0% (14th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-18916
Weakness: CWE-79
Affected product: Fastgpt
Published: 2025-06-21
Last modified: 2026-06-17

Description

FastGPT is an AI Agent building platform. Prior to version 4.9.12, the LastRoute Parameter on login page is vulnerable to open redirect and DOM-based XSS. Improper validation and lack of sanitization of this parameter allows attackers execute malicious JavaScript or redirect them to attacker-controlled sites. This issue has been patched in version 4.9.12.

Frequently asked questions

What is CVE-2025-52552?: FastGPT is an AI Agent building platform. Prior to version 4.9.12, the LastRoute Parameter on login page is vulnerable to open redirect and DOM-based XSS. Improper validation and lack of sanitization of this parameter allows attackers execute malicious JavaScript or redirect them to attacker-controlled sites. This issue has been patched in version 4.9.12.
How severe is CVE-2025-52552?: CVE-2025-52552 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2025-52552 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (14th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-52552?: CVE-2025-52552 affects Fastgpt. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-52552?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-52552 have an EU (EUVD) identifier?: Yes. CVE-2025-52552 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-18916.
When was CVE-2025-52552 published?: CVE-2025-52552 was published on 2025-06-21 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:fastgpt:fastgpt:*:*:*:*:*:*:*:*

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