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CVE-2026-8406

openSIS Classic 9.3 contains an insecure direct object reference vulnerability in the messaging module. Any authenticated user with access to the messaging module can request sent-message details from modules/messaging/SentMail.php by supplying an arbitrary mail_id value.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:355723b5973263f8984817f909072c13e1bcdbc4155d37399f499c9e9d63337b
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0

Affected products and versions

1 source assertion
{"defaultStatus":"unaffected","platforms":["Windows","Linux","MacOS"],"product":"openSIS-Classic","vendor":"OS4ED","versions":[{"status":"affected","version":"9.3"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:3784fdfdd098d7a05517dd4f324aae08cffb26833439a14dda447ab9326d72c6 · sha256:0e4722277831fd17… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":7.1,"baseSeverity":"HIGH","privilegesRequired":"LOW","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","valueDensity":"NOT_DEFINED","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"NONE…
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:3784fdfdd098d7a05517dd4f324aae08cffb26833439a14dda447ab9326d72c6 · sha256:0e4722277831fd17… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

1 source assertion
{"cweId":"CWE-639","description":"CWE-639 Authorization Bypass Through User-Controlled Key","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:3784fdfdd098d7a05517dd4f324aae08cffb26833439a14dda447ab9326d72c6 · sha256:0e4722277831fd17… · /containers/cna/problemTypes/0/descriptions/0

Source references

4 source assertions
{"tags":["third-party-advisory"],"url":"https://fluidattacks.com/es/advisories/melanie"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:3784fdfdd098d7a05517dd4f324aae08cffb26833439a14dda447ab9326d72c6 · sha256:0e4722277831fd17… · /containers/cna/references/0
{"tags":["exploit"],"url":"https://fluidattacks.com/es/advisories/melanie"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:3784fdfdd098d7a05517dd4f324aae08cffb26833439a14dda447ab9326d72c6 · sha256:0e4722277831fd17… · /containers/adp/0/references/0
{"tags":["product"],"url":"https://github.com/OS4ED/openSIS-Classic"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:3784fdfdd098d7a05517dd4f324aae08cffb26833439a14dda447ab9326d72c6 · sha256:0e4722277831fd17… · /containers/cna/references/2
{"tags":["patch"],"url":"https://github.com/OS4ED/openSIS-Classic/commit/c45d43146167324bae06bdf09de3e4bd2e5e478f"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:3784fdfdd098d7a05517dd4f324aae08cffb26833439a14dda447ab9326d72c6 · sha256:0e4722277831fd17… · /containers/cna/references/1

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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