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CVE-2026-40496

FreeScout is a free self-hosted help desk and shared mailbox. Prior to version 1.8.213, attachment download tokens are generated using a weak and predictable formula: `md5(APP_KEY + attachment_id + size)`. Since attachment_id is sequential and size can be brute-forced in a small range, an unauthenticated attacker can forge valid tokens and download any private attachment without credentials. Version 1.8.213 fixes the issue.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:4280166f89e690f75dd377bdf2455f7469b5b5330744b26de70359faa0c53329
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

cwe · 2 assertions

{"cweId":"CWE-340","description":"CWE-340: Generation of Predictable Numbers or Identifiers","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:50d27ee9e6dbdb69c913f444139912f6e52b12ebd49aef89fed26cb5781f25d7 · sha256:7e438021e0d3aebf… · /containers/cna/problemTypes/1/descriptions/0

{"cweId":"CWE-330","description":"CWE-330: Use of Insufficiently Random Values","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:50d27ee9e6dbdb69c913f444139912f6e52b12ebd49aef89fed26cb5781f25d7 · sha256:7e438021e0d3aebf… · /containers/cna/problemTypes/0/descriptions/0

Affected products and versions

1 source assertion
{"product":"freescout","vendor":"freescout-help-desk","versions":[{"status":"affected","version":"< 1.8.213"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:50d27ee9e6dbdb69c913f444139912f6e52b12ebd49aef89fed26cb5781f25d7 · sha256:7e438021e0d3aebf… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":8.8,"baseSeverity":"HIGH","privilegesRequired":"NONE","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:P","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"HIGH"},"metric_type":"cvssV4_0"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:50d27ee9e6dbdb69c913f444139912f6e52b12ebd49aef89fed26cb5781f25d7 · sha256:7e438021e0d3aebf… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

2 source assertions
{"cweId":"CWE-340","description":"CWE-340: Generation of Predictable Numbers or Identifiers","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:50d27ee9e6dbdb69c913f444139912f6e52b12ebd49aef89fed26cb5781f25d7 · sha256:7e438021e0d3aebf… · /containers/cna/problemTypes/1/descriptions/0
{"cweId":"CWE-330","description":"CWE-330: Use of Insufficiently Random Values","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:50d27ee9e6dbdb69c913f444139912f6e52b12ebd49aef89fed26cb5781f25d7 · sha256:7e438021e0d3aebf… · /containers/cna/problemTypes/0/descriptions/0

Source references

3 source assertions
{"name":"https://github.com/freescout-help-desk/freescout/commit/dbdf8f2260b43a21818255c70f0b61b9de9cd555","tags":["x_refsource_MISC"],"url":"https://github.com/freescout-help-desk/freescout/commit/dbdf8f2260b43a21818255c70f0b61b9de9cd555"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:50d27ee9e6dbdb69c913f444139912f6e52b12ebd49aef89fed26cb5781f25d7 · sha256:7e438021e0d3aebf… · /containers/cna/references/1
{"name":"https://github.com/freescout-help-desk/freescout/releases/tag/1.8.213","tags":["x_refsource_MISC"],"url":"https://github.com/freescout-help-desk/freescout/releases/tag/1.8.213"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:50d27ee9e6dbdb69c913f444139912f6e52b12ebd49aef89fed26cb5781f25d7 · sha256:7e438021e0d3aebf… · /containers/cna/references/2
{"name":"https://github.com/freescout-help-desk/freescout/security/advisories/GHSA-2783-wxmm-wmwr","tags":["x_refsource_CONFIRM"],"url":"https://github.com/freescout-help-desk/freescout/security/advisories/GHSA-2783-wxmm-wmwr"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:50d27ee9e6dbdb69c913f444139912f6e52b12ebd49aef89fed26cb5781f25d7 · sha256:7e438021e0d3aebf… · /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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