MEDIUMpublic-safe

CVE-2026-87859

NVD: morgan is an HTTP request logger middleware for Node.js. NVD: In versions before 1.12.1, its escapeLogField() function does not escape the double quote character, which delimits the quoted fields of the Apache combined log format that morgan emits. NVD: An unauthenticated remote attacker who controls a value written to a quoted field, such as the User-Agent or Referer header, can include a double quote to close that field early, so a log consumer that parses the log by field position reads attacker-supplied...

CVSS
5.3 Severity
MEDIUM EPSS
0.0039 (33) KEV
-

Source-published summary

Possible impact

Source describes remote exposure. Possible impact: This medium severity issue needs human triage to confirm exposure, affected versions, and vendor guidance for remote exposure.

Affected context

Affected product or version requires source confirmation.

Remediation / advisory

Patch confirmed by source text; fixed version context: morgan.

Why it matters

Source describes remote exposure. Possible impact: This medium severity issue needs human triage to confirm exposure, affected versions, and vendor guidance for remote exposure.; CVSS 5.3 (MEDIUM); EPSS percentile 33; not listed in KEV; Patch confirmed by source text; fixed version context: morgan; sources: NVD, OSV.

What to verify

Confirm affected product/version, vendor advisory, patch or mitigation, and exposure.

Exposure hint

remote exposure

Impact tags

remote exposure relevant

Urgency reasons

vendor advisory presentrecent updateremediation reference present

Source-derived note

Summary derived from NVD / OSV description; unsafe procedural detail is not shown.

Redaction metadata

source summary used: True
fallback summary used: False
unsafe procedural detail present: false
raw source displayed: false
public summary redacted: true

Remediation handoff

Public-safe static handoff for human/Codex remediation planning. Scan, patch, external execution, and auto remediation are disabled.

Handoff JSON Handoff Markdown Safe Codex prompt

Safety note

This radar shows source-published defensive context only. Exploit procedures, exploit strings, scanner commands, and auto-remediation are not provided.