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CVE-2026-34975

Plunk is an open-source email platform built on top of AWS SES. Prior to 0.8.0, a CRLF header injection vulnerability was discovered in SESService.ts, where user-supplied values for from.name, subject, custom header keys/values, and attachment filenames were interpolated directly into raw MIME messages without sanitization. An authenticated API user could inject arbitrary email headers (e.g. Bcc, Reply-To) by embedding carriage return/line feed characters in these fields, enabling silent email f
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:3787e47a8127ea7111e997f14b863bf93fbb59ce719925c42f11030e8eb6ed65
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0

Affected products and versions

1 source assertion
{"product":"plunk","vendor":"useplunk","versions":[{"status":"affected","version":"< 0.8.0"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:2b689714260edc0f22f34089e23f2932c517c3c87ea5ab3b65c4e946112d98df · sha256:3e7f82b5b88e3646… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":8.5,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"LOW","privilegesRequired":"LOW","scope":"CHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:2b689714260edc0f22f34089e23f2932c517c3c87ea5ab3b65c4e946112d98df · sha256:3e7f82b5b88e3646… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

1 source assertion
{"cweId":"CWE-93","description":"CWE-93: Improper Neutralization of CRLF Sequences ('CRLF Injection')","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:2b689714260edc0f22f34089e23f2932c517c3c87ea5ab3b65c4e946112d98df · sha256:3e7f82b5b88e3646… · /containers/cna/problemTypes/0/descriptions/0

Source references

1 source assertion
{"name":"https://github.com/useplunk/plunk/security/advisories/GHSA-2mvm-rg5v-7hfq","tags":["x_refsource_CONFIRM"],"url":"https://github.com/useplunk/plunk/security/advisories/GHSA-2mvm-rg5v-7hfq"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:2b689714260edc0f22f34089e23f2932c517c3c87ea5ab3b65c4e946112d98df · sha256:3e7f82b5b88e3646… · /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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