CVE-2023-22454 (GCVE-0-2023-22454)
Vulnerability from cvelistv5 – Published: 2023-01-05 19:58 – Updated: 2025-03-10 21:31
VLAI
EPSS
VEX
Title
Discourse vulnerable to Cross-site Scripting through pending post titles descriptions
Summary
Discourse is an option source discussion platform. Prior to version 2.8.14 on the `stable` branch and version 3.0.0.beta16 on the `beta` and `tests-passed` branches, pending post titles can be used for cross-site scripting attacks. Pending posts can be created by unprivileged users when a category has the "require moderator approval of all new topics" setting set. This vulnerability can lead to a full XSS on sites which have modified or disabled Discourse’s default Content Security Policy. A patch is available in versions 2.8.14 and 3.0.0.beta16.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-03-10 20:58 UTC
CWE
- CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/discourse/discourse/security/a… | x_refsource_CONFIRM |
| https://github.com/discourse/discourse/commit/c0e… | x_refsource_MISC |
Impacted products
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"redhat_vex": {
"current_release_date": "2025-05-29T00:57:45+00:00",
"cve": "CVE-2023-22454",
"id": "CVE-2023-22454",
"initial_release_date": "2023-01-01T00:00:00+00:00",
"product_status:known_not_affected": "1",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "Discourse vulnerable to Cross-site Scripting through pending post titles descriptions",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2023/cve-2023-22454.json",
"version": "3"
},
"vulnrichment": {
"containers": "{\"adp\": [{\"title\": \"CVE Program Container\", \"references\": [{\"url\": \"https://github.com/discourse/discourse/security/advisories/GHSA-ggq4-4qxc-c462\", \"name\": \"https://github.com/discourse/discourse/security/advisories/GHSA-ggq4-4qxc-c462\", \"tags\": [\"x_refsource_CONFIRM\", \"x_transferred\"]}, {\"url\": \"https://github.com/discourse/discourse/commit/c0e2d7badac276d82a4056a994b48d68a8993a12\", \"name\": \"https://github.com/discourse/discourse/commit/c0e2d7badac276d82a4056a994b48d68a8993a12\", \"tags\": [\"x_refsource_MISC\", \"x_transferred\"]}], \"providerMetadata\": {\"orgId\": \"af854a3a-2127-422b-91ae-364da2661108\", \"shortName\": \"CVE\", \"dateUpdated\": \"2024-08-02T10:13:48.361Z\"}}, {\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2023-22454\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"total\"}], \"version\": \"2.0.3\", \"timestamp\": \"2025-03-10T20:58:50.831732Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2025-03-10T20:58:52.578Z\"}}], \"cna\": {\"title\": \"Discourse vulnerable to Cross-site Scripting through pending post titles descriptions\", \"source\": {\"advisory\": \"GHSA-ggq4-4qxc-c462\", \"discovery\": \"UNKNOWN\"}, \"metrics\": [{\"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 8, \"attackVector\": \"NETWORK\", \"baseSeverity\": \"HIGH\", \"vectorString\": \"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H\", \"integrityImpact\": \"HIGH\", \"userInteraction\": \"REQUIRED\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"HIGH\", \"privilegesRequired\": \"LOW\", \"confidentialityImpact\": \"HIGH\"}}], \"affected\": [{\"vendor\": \"discourse\", \"product\": \"discourse\", \"versions\": [{\"status\": \"affected\", \"version\": \"\u003c 2.8.14\"}, {\"status\": \"affected\", \"version\": \"\u003e= 2.9.0.beta0, \u003c 3.0.0.beta16\"}]}], \"references\": [{\"url\": \"https://github.com/discourse/discourse/security/advisories/GHSA-ggq4-4qxc-c462\", \"name\": \"https://github.com/discourse/discourse/security/advisories/GHSA-ggq4-4qxc-c462\", \"tags\": [\"x_refsource_CONFIRM\"]}, {\"url\": \"https://github.com/discourse/discourse/commit/c0e2d7badac276d82a4056a994b48d68a8993a12\", \"name\": \"https://github.com/discourse/discourse/commit/c0e2d7badac276d82a4056a994b48d68a8993a12\", \"tags\": [\"x_refsource_MISC\"]}], \"descriptions\": [{\"lang\": \"en\", \"value\": \"Discourse is an option source discussion platform. Prior to version 2.8.14 on the `stable` branch and version 3.0.0.beta16 on the `beta` and `tests-passed` branches, pending post titles can be used for cross-site scripting attacks. Pending posts can be created by unprivileged users when a category has the \\\"require moderator approval of all new topics\\\" setting set. This vulnerability can lead to a full XSS on sites which have modified or disabled Discourse\\u2019s default Content Security Policy. A patch is available in versions 2.8.14 and 3.0.0.beta16.\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-79\", \"description\": \"CWE-79: Improper Neutralization of Input During Web Page Generation (\u0027Cross-site Scripting\u0027)\"}]}], \"providerMetadata\": {\"orgId\": \"a0819718-46f1-4df5-94e2-005712e83aaa\", \"shortName\": \"GitHub_M\", \"dateUpdated\": \"2023-01-05T19:58:36.355Z\"}}}",
"cveMetadata": "{\"cveId\": \"CVE-2023-22454\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-03-10T21:31:46.858Z\", \"dateReserved\": \"2022-12-29T03:00:40.877Z\", \"assignerOrgId\": \"a0819718-46f1-4df5-94e2-005712e83aaa\", \"datePublished\": \"2023-01-05T19:58:36.355Z\", \"assignerShortName\": \"GitHub_M\"}",
"dataType": "CVE_RECORD",
"dataVersion": "5.1"
}
}
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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