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CVE-2026-45788

Discourse is an open-source discussion platform. Prior to 2026.6.0, 2026.5.1, 2026.4.2, and 2026.1.5, secure uploads could be exposed by pull_hotlinked_images when an attacker knew the secured upload URL and the secure_uploads site setting was enabled. This issue is fixed in versions 2026.6.0, 2026.5.1, 2026.4.2, and 2026.1.5.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:a06871efe0eccea8369048688c27013f958dfaf3f522cfd5807ddd7f38971820
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0

Affected products and versions

1 source assertion
{"product":"discourse","vendor":"discourse","versions":[{"status":"affected","version":">= 2026.1.0-latest, < 2026.1.5"},{"status":"affected","version":">= 2026.4.0-latest, < 2026.4.2"},{"status":"affected","version":">= 2026.5.0-latest, < 2026.5.1"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:ca21045a1b1853ea59b09c695b93adc9d7ba61af0d2e16e07b59830f8b87ae3f · sha256:f7211c242d4fb2dc… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"HIGH","attackRequirements":"PRESENT","attackVector":"NETWORK","baseScore":6.3,"baseSeverity":"MEDIUM","privilegesRequired":"NONE","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","vectorString":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact":"LOW","vulnIntegrityImpact":"NONE"},"metric_type":"cvssV4_0"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:ca21045a1b1853ea59b09c695b93adc9d7ba61af0d2e16e07b59830f8b87ae3f · sha256:f7211c242d4fb2dc… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

1 source assertion
{"cweId":"CWE-200","description":"CWE-200: Exposure of Sensitive Information to an Unauthorized Actor","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:ca21045a1b1853ea59b09c695b93adc9d7ba61af0d2e16e07b59830f8b87ae3f · sha256:f7211c242d4fb2dc… · /containers/cna/problemTypes/0/descriptions/0

Source references

9 source assertions
{"name":"https://github.com/discourse/discourse/commit/5807c426880eadf248006e851604fc9284327ce5","tags":["x_refsource_MISC"],"url":"https://github.com/discourse/discourse/commit/5807c426880eadf248006e851604fc9284327ce5"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:ca21045a1b1853ea59b09c695b93adc9d7ba61af0d2e16e07b59830f8b87ae3f · sha256:f7211c242d4fb2dc… · /containers/cna/references/1
{"name":"https://github.com/discourse/discourse/commit/8b4a959b251a856a9c911fb9f2ac34fbc31a7471","tags":["x_refsource_MISC"],"url":"https://github.com/discourse/discourse/commit/8b4a959b251a856a9c911fb9f2ac34fbc31a7471"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:ca21045a1b1853ea59b09c695b93adc9d7ba61af0d2e16e07b59830f8b87ae3f · sha256:f7211c242d4fb2dc… · /containers/cna/references/2
{"name":"https://github.com/discourse/discourse/commit/eff53af26367ae0dcb3a426954d233e8c7449f95","tags":["x_refsource_MISC"],"url":"https://github.com/discourse/discourse/commit/eff53af26367ae0dcb3a426954d233e8c7449f95"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:ca21045a1b1853ea59b09c695b93adc9d7ba61af0d2e16e07b59830f8b87ae3f · sha256:f7211c242d4fb2dc… · /containers/cna/references/3
{"name":"https://github.com/discourse/discourse/commit/fa74e0dec7341a858ab83a1977fa52629bced1aa","tags":["x_refsource_MISC"],"url":"https://github.com/discourse/discourse/commit/fa74e0dec7341a858ab83a1977fa52629bced1aa"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:ca21045a1b1853ea59b09c695b93adc9d7ba61af0d2e16e07b59830f8b87ae3f · sha256:f7211c242d4fb2dc… · /containers/cna/references/4
{"name":"https://github.com/discourse/discourse/releases/tag/v2026.1.5","tags":["x_refsource_MISC"],"url":"https://github.com/discourse/discourse/releases/tag/v2026.1.5"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:ca21045a1b1853ea59b09c695b93adc9d7ba61af0d2e16e07b59830f8b87ae3f · sha256:f7211c242d4fb2dc… · /containers/cna/references/5
{"name":"https://github.com/discourse/discourse/releases/tag/v2026.4.2","tags":["x_refsource_MISC"],"url":"https://github.com/discourse/discourse/releases/tag/v2026.4.2"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:ca21045a1b1853ea59b09c695b93adc9d7ba61af0d2e16e07b59830f8b87ae3f · sha256:f7211c242d4fb2dc… · /containers/cna/references/6
{"name":"https://github.com/discourse/discourse/releases/tag/v2026.5.1","tags":["x_refsource_MISC"],"url":"https://github.com/discourse/discourse/releases/tag/v2026.5.1"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:ca21045a1b1853ea59b09c695b93adc9d7ba61af0d2e16e07b59830f8b87ae3f · sha256:f7211c242d4fb2dc… · /containers/cna/references/7
{"name":"https://github.com/discourse/discourse/releases/tag/v2026.6.0","tags":["x_refsource_MISC"],"url":"https://github.com/discourse/discourse/releases/tag/v2026.6.0"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:ca21045a1b1853ea59b09c695b93adc9d7ba61af0d2e16e07b59830f8b87ae3f · sha256:f7211c242d4fb2dc… · /containers/cna/references/8
{"name":"https://github.com/discourse/discourse/security/advisories/GHSA-3876-w96v-8v38","tags":["x_refsource_CONFIRM"],"url":"https://github.com/discourse/discourse/security/advisories/GHSA-3876-w96v-8v38"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:ca21045a1b1853ea59b09c695b93adc9d7ba61af0d2e16e07b59830f8b87ae3f · sha256:f7211c242d4fb2dc… · /containers/cna/references/0

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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