How severe is CVE-2025-59337?

CVE-2025-59337 has a CVSS 3.x base score of 6.8, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2025-59337 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (20th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-59337?

CVE-2025-59337 primarily affects Discourse. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2025-59337?

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

Does CVE-2025-59337 have an EU (EUVD) identifier?

Yes. CVE-2025-59337 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-33221.

When was CVE-2025-59337 published?

CVE-2025-59337 was published on 2025-10-01 and last updated on 2026-06-17.

CVE-2025-59337

CVE-2025-59337 is a medium-severity vulnerability in Discourse with a CVSS 3.x base score of 6.8. 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-77.

Key facts

Severity: Medium (CVSS 3.x base score 6.8)
CVSS v4: 5.5
EPSS exploit prediction: 0% (20th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-33221
Weakness: CWE-77
Affected product: Discourse
Published: 2025-10-01
Last modified: 2026-06-17

Description

Discourse is an open-source community discussion platform. In versions 3.5.0 and below, malicious meta-commands could be embedded in a backup dump and executed during restore. In multisite setups, this allowed an admin of one site to access data or credentials from other sites. This issue is fixed in version 3.5.1.

Frequently asked questions

What is CVE-2025-59337?: Discourse is an open-source community discussion platform. In versions 3.5.0 and below, malicious meta-commands could be embedded in a backup dump and executed during restore. In multisite setups, this allowed an admin of one site to access data or credentials from other sites. This issue is fixed in version 3.5.1.
How severe is CVE-2025-59337?: CVE-2025-59337 has a CVSS 3.x base score of 6.8, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2025-59337 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (20th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-59337?: CVE-2025-59337 primarily affects Discourse. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2025-59337?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-59337 have an EU (EUVD) identifier?: Yes. CVE-2025-59337 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-33221.
When was CVE-2025-59337 published?: CVE-2025-59337 was published on 2025-10-01 and last updated on 2026-06-17.

References

Affected products (3)

cpe:2.3:a:discourse:discourse:*:*:*:*:stable:*:*:*
cpe:2.3:a:discourse:discourse:*:*:*:*:beta:*:*:*
cpe:2.3:a:discourse:discourse:3.6.0:beta1:*:*:beta:*:*:*

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