How severe is CVE-2023-48297?

CVE-2023-48297 has a CVSS 3.x base score of 8.6, 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-2023-48297 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (40th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-48297?

CVE-2023-48297 primarily affects Discourse. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2023-48297?

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-2023-48297 have an EU (EUVD) identifier?

Yes. CVE-2023-48297 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-52358.

When was CVE-2023-48297 published?

CVE-2023-48297 was published on 2024-01-12 and last updated on 2026-06-17.

CVE-2023-48297

CVE-2023-48297 is a high-severity vulnerability in Discourse with a CVSS 3.x base score of 8.6. 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 8.6)
EPSS exploit prediction: 1% (40th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2023-52358
Weakness: CWE-400
Affected product: Discourse
Published: 2024-01-12
Last modified: 2026-06-17

Description

Discourse is a platform for community discussion. The message serializer uses the full list of expanded chat mentions (@all and @here) which can lead to a very long array of users. This issue was patched in versions 3.1.4 and beta 3.2.0.beta5.

Frequently asked questions

What is CVE-2023-48297?: Discourse is a platform for community discussion. The message serializer uses the full list of expanded chat mentions (@all and @here) which can lead to a very long array of users. This issue was patched in versions 3.1.4 and beta 3.2.0.beta5.
How severe is CVE-2023-48297?: CVE-2023-48297 has a CVSS 3.x base score of 8.6, 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-2023-48297 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (40th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-48297?: CVE-2023-48297 primarily affects Discourse. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2023-48297?: 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-2023-48297 have an EU (EUVD) identifier?: Yes. CVE-2023-48297 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-52358.
When was CVE-2023-48297 published?: CVE-2023-48297 was published on 2024-01-12 and last updated on 2026-06-17.

References

https://github.com/discourse/discourse/security/advisories/GHSA-hf2v-r5xm-8p37

Affected products (4)

cpe:2.3:a:discourse:discourse:*:*:*:*:stable:*:*:*
cpe:2.3:a:discourse:discourse:3.2.0:beta1:*:*:beta:*:*:*
cpe:2.3:a:discourse:discourse:3.2.0:beta2:*:*:beta:*:*:*
cpe:2.3:a:discourse:discourse:3.2.0:beta3:*:*:beta:*:*:*

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