How severe is CVE-2022-23549?

CVE-2022-23549 has a CVSS 3.x base score of 5.7, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2022-23549 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (43rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2022-23549?

CVE-2022-23549 primarily affects Discourse. In total, 15 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2022-23549?

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

When was CVE-2022-23549 published?

CVE-2022-23549 was published on 2023-01-05 and last updated on 2026-06-17.

CVE-2022-23549

CVE-2022-23549 is a medium-severity vulnerability in Discourse with a CVSS 3.x base score of 5.7. 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-20.

Key facts

Severity: Medium (CVSS 3.x base score 5.7)
EPSS exploit prediction: 1% (43rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Discourse
Published: 2023-01-05
Last modified: 2026-06-17

Description

Discourse is an option source discussion platform. Prior to version 2.8.14 on the `stable` branch and version 2.9.0.beta16 on the `beta` and `tests-passed` branches, users can create posts with raw body longer than the `max_length` site setting by including html comments that are not counted toward the character limit. This issue is patched in versions 2.8.14 and 2.9.0.beta16. There are no known workarounds.

Frequently asked questions

What is CVE-2022-23549?: Discourse is an option source discussion platform. Prior to version 2.8.14 on the `stable` branch and version 2.9.0.beta16 on the `beta` and `tests-passed` branches, users can create posts with raw body longer than the `max_length` site setting by including html comments that are not counted toward the character limit. This issue is patched in versions 2.8.14 and 2.9.0.beta16. There are no known workarounds.
How severe is CVE-2022-23549?: CVE-2022-23549 has a CVSS 3.x base score of 5.7, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2022-23549 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (43rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2022-23549?: CVE-2022-23549 primarily affects Discourse. In total, 15 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2022-23549?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2022-23549 published?: CVE-2022-23549 was published on 2023-01-05 and last updated on 2026-06-17.

References

Affected products (15)

cpe:2.3:a:discourse:discourse:*:*:*:*:*:*:*:*
cpe:2.3:a:discourse:discourse:2.9.0:beta1:*:*:*:*:*:*
cpe:2.3:a:discourse:discourse:2.9.0:beta10:*:*:*:*:*:*
cpe:2.3:a:discourse:discourse:2.9.0:beta11:*:*:*:*:*:*
cpe:2.3:a:discourse:discourse:2.9.0:beta12:*:*:*:*:*:*
cpe:2.3:a:discourse:discourse:2.9.0:beta13:*:*:*:*:*:*
cpe:2.3:a:discourse:discourse:2.9.0:beta14:*:*:*:*:*:*
cpe:2.3:a:discourse:discourse:2.9.0:beta2:*:*:*:*:*:*
cpe:2.3:a:discourse:discourse:2.9.0:beta3:*:*:*:*:*:*
cpe:2.3:a:discourse:discourse:2.9.0:beta4:*:*:*:*:*:*
cpe:2.3:a:discourse:discourse:2.9.0:beta5:*:*:*:*:*:*
cpe:2.3:a:discourse:discourse:2.9.0:beta6:*:*:*:*:*:*
cpe:2.3:a:discourse:discourse:2.9.0:beta7:*:*:*:*:*:*
cpe:2.3:a:discourse:discourse:2.9.0:beta8:*:*:*:*:*:*
cpe:2.3:a:discourse:discourse:3.0.0:beta15:*:*:*:*:*:*

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