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CVE-2026-28809

XML External Entity (XXE) vulnerability in esaml (and its forks) allows an attacker to cause the system to read local files and incorporate their contents into processed SAML documents, and potentially perform SSRF via crafted SAML messages. esaml parses attacker-controlled SAML messages using xmerl_scan:string/2 before signature verification without disabling XML entity expansion. On Erlang/OTP versions before 27, Xmerl allows entities by default, enabling pre-signature XXE attacks. An attacke
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:f0f272a2d434af1fa80879ed890def2a60446336cf73842b735e0fdd2c7638af
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

affected · 5 assertions

{"cpes":["cpe:2.3:a:dropbox:esaml:*:*:*:*:*:*:*:*","cpe:2.3:a:arekinath:esaml:*:*:*:*:*:*:*:*","cpe:2.3:a:handnot2:esaml:*:*:*:*:*:*:*:*"],"defaultStatus":"affected","packageName":"esaml","packageURL":"pkg:hex/esaml","product":"esaml","vendor":"dropbox"}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:94ac2b199af936b76ddf879bcf23d05c2d37293c45b5b7c93ccbc5b06052429a · sha256:72ec7ea24e291d7d… · /containers/cna/affected/0

{"collectionURL":"https://github.com","cpes":["cpe:2.3:a:jump-app:esaml:*:*:*:*:*:*:*:*"],"defaultStatus":"affected","packageName":"Jump-App/esaml","packageURL":"pkg:github/Jump-App/esaml","product":"esaml","repo":"https://github.com/Jump-App/esaml.git","vendor":"Jump-App","versions":[{"lessThan":"bab85efde7c136911402a881ca55173759467a26","status":"affected","version":"deeb84378d5c82153b470e99d24f77c38afca14a","versionType":"git"},{"status":"unaffected","version":"bab85efde7c136911402a881ca55173759467a26","versionType":"git"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:94ac2b199af936b76ddf879bcf23d05c2d37293c45b5b7c93ccbc5b06052429a · sha256:72ec7ea24e291d7d… · /containers/cna/affected/4

{"collectionURL":"https://github.com","cpes":["cpe:2.3:a:handnot2:esaml:*:*:*:*:*:*:*:*"],"defaultStatus":"affected","packageName":"handnot2/esaml","packageURL":"pkg:github/handnot2/esaml","product":"esaml","repo":"https://github.com/handnot2/esaml.git","vendor":"handnot2"}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:94ac2b199af936b76ddf879bcf23d05c2d37293c45b5b7c93ccbc5b06052429a · sha256:72ec7ea24e291d7d… · /containers/cna/affected/2

{"collectionURL":"https://github.com","cpes":["cpe:2.3:a:arekinath:esaml:*:*:*:*:*:*:*:*"],"defaultStatus":"affected","packageName":"arekinath/esaml","packageURL":"pkg:github/arekinath/esaml","product":"esaml","repo":"https://github.com/arekinath/esaml.git","vendor":"arekinath"}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:94ac2b199af936b76ddf879bcf23d05c2d37293c45b5b7c93ccbc5b06052429a · sha256:72ec7ea24e291d7d… · /containers/cna/affected/1

{"collectionURL":"https://github.com","cpes":["cpe:2.3:a:dropbox:esaml:*:*:*:*:*:*:*:*"],"defaultStatus":"affected","packageName":"dropbox/esaml","packageURL":"pkg:github/dropbox/esaml","product":"esaml","repo":"https://github.com/dropbox/esaml.git","vendor":"dropbox"}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:94ac2b199af936b76ddf879bcf23d05c2d37293c45b5b7c93ccbc5b06052429a · sha256:72ec7ea24e291d7d… · /containers/cna/affected/3

Affected products and versions

5 source assertions
{"cpes":["cpe:2.3:a:dropbox:esaml:*:*:*:*:*:*:*:*","cpe:2.3:a:arekinath:esaml:*:*:*:*:*:*:*:*","cpe:2.3:a:handnot2:esaml:*:*:*:*:*:*:*:*"],"defaultStatus":"affected","packageName":"esaml","packageURL":"pkg:hex/esaml","product":"esaml","vendor":"dropbox"}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:94ac2b199af936b76ddf879bcf23d05c2d37293c45b5b7c93ccbc5b06052429a · sha256:72ec7ea24e291d7d… · /containers/cna/affected/0
{"collectionURL":"https://github.com","cpes":["cpe:2.3:a:jump-app:esaml:*:*:*:*:*:*:*:*"],"defaultStatus":"affected","packageName":"Jump-App/esaml","packageURL":"pkg:github/Jump-App/esaml","product":"esaml","repo":"https://github.com/Jump-App/esaml.git","vendor":"Jump-App","versions":[{"lessThan":"bab85efde7c136911402a881ca55173759467a26","status":"affected","version":"deeb84378d5c82153b470e99d24f77c38afca14a","versionType":"git"},{"status":"unaffected","version":"bab85efde7c136911402a881ca55173759467a26","versionType":"git"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:94ac2b199af936b76ddf879bcf23d05c2d37293c45b5b7c93ccbc5b06052429a · sha256:72ec7ea24e291d7d… · /containers/cna/affected/4
{"collectionURL":"https://github.com","cpes":["cpe:2.3:a:handnot2:esaml:*:*:*:*:*:*:*:*"],"defaultStatus":"affected","packageName":"handnot2/esaml","packageURL":"pkg:github/handnot2/esaml","product":"esaml","repo":"https://github.com/handnot2/esaml.git","vendor":"handnot2"}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:94ac2b199af936b76ddf879bcf23d05c2d37293c45b5b7c93ccbc5b06052429a · sha256:72ec7ea24e291d7d… · /containers/cna/affected/2
{"collectionURL":"https://github.com","cpes":["cpe:2.3:a:arekinath:esaml:*:*:*:*:*:*:*:*"],"defaultStatus":"affected","packageName":"arekinath/esaml","packageURL":"pkg:github/arekinath/esaml","product":"esaml","repo":"https://github.com/arekinath/esaml.git","vendor":"arekinath"}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:94ac2b199af936b76ddf879bcf23d05c2d37293c45b5b7c93ccbc5b06052429a · sha256:72ec7ea24e291d7d… · /containers/cna/affected/1
{"collectionURL":"https://github.com","cpes":["cpe:2.3:a:dropbox:esaml:*:*:*:*:*:*:*:*"],"defaultStatus":"affected","packageName":"dropbox/esaml","packageURL":"pkg:github/dropbox/esaml","product":"esaml","repo":"https://github.com/dropbox/esaml.git","vendor":"dropbox"}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:94ac2b199af936b76ddf879bcf23d05c2d37293c45b5b7c93ccbc5b06052429a · sha256:72ec7ea24e291d7d… · /containers/cna/affected/3

Provider-owned CVSS observations

1 source assertion
{"metric":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"PRESENT","attackVector":"NETWORK","baseScore":6.3,"baseSeverity":"MEDIUM","exploitMaturity":"NOT_DEFINED","privilegesRequired":"NONE","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","valueDensity":"NOT_DEFINED","vectorString":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpa…
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:94ac2b199af936b76ddf879bcf23d05c2d37293c45b5b7c93ccbc5b06052429a · sha256:72ec7ea24e291d7d… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

1 source assertion
{"cweId":"CWE-611","description":"CWE-611 Improper Restriction of XML External Entity Reference","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:94ac2b199af936b76ddf879bcf23d05c2d37293c45b5b7c93ccbc5b06052429a · sha256:72ec7ea24e291d7d… · /containers/cna/problemTypes/0/descriptions/0

Source references

3 source assertions
{"tags":["third-party-advisory","related"],"url":"https://cna.erlef.org/cves/CVE-2026-28809.html"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:94ac2b199af936b76ddf879bcf23d05c2d37293c45b5b7c93ccbc5b06052429a · sha256:72ec7ea24e291d7d… · /containers/cna/references/0
{"tags":["patch"],"url":"https://github.com/Jump-App/esaml/commit/bab85efde7c136911402a881ca55173759467a26"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:94ac2b199af936b76ddf879bcf23d05c2d37293c45b5b7c93ccbc5b06052429a · sha256:72ec7ea24e291d7d… · /containers/cna/references/2
{"tags":["related"],"url":"https://osv.dev/vulnerability/EEF-CVE-2026-28809"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:94ac2b199af936b76ddf879bcf23d05c2d37293c45b5b7c93ccbc5b06052429a · sha256:72ec7ea24e291d7d… · /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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