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CVE-2026-13503

A vulnerability was detected in antlr ANTLR4 up to 4.13.2. Affected by this issue is the function getImportedVocabFile of the file tool/src/org/antlr/v4/parse/TokenVocabParser.java of the component tokenVocab Grammar Option Handler. The manipulation results in path traversal. The attack can be executed remotely. The exploit is now public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:db3a494051198d2a957d93d1d4698251bd286c58735989d5090d200b7423b9c8
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

cvss · 4 assertions

{"metric":{"baseScore":6.9,"baseSeverity":"MEDIUM","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P","version":"4.0"},"metric_type":"cvssV4_0"}

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:e207ed61611d944e8cb0af21199783bd42901e8276d03850445532153c197c9f · sha256:369b2ec1b5ce4c16… · /containers/cna/metrics/0/cvssV4_0

{"metric":{"baseScore":5.3,"baseSeverity":"MEDIUM","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:P/RL:X/RC:R","version":"3.1"},"metric_type":"cvssV3_1"}

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:e207ed61611d944e8cb0af21199783bd42901e8276d03850445532153c197c9f · sha256:369b2ec1b5ce4c16… · /containers/cna/metrics/1/cvssV3_1

{"metric":{"baseScore":5,"vectorString":"AV:N/AC:L/Au:N/C:P/I:N/A:N/E:POC/RL:ND/RC:UR","version":"2.0"},"metric_type":"cvssV2_0"}

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:e207ed61611d944e8cb0af21199783bd42901e8276d03850445532153c197c9f · sha256:369b2ec1b5ce4c16… · /containers/cna/metrics/3/cvssV2_0

{"metric":{"baseScore":5.3,"baseSeverity":"MEDIUM","vectorString":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:P/RL:X/RC:R","version":"3.0"},"metric_type":"cvssV3_0"}

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:e207ed61611d944e8cb0af21199783bd42901e8276d03850445532153c197c9f · sha256:369b2ec1b5ce4c16… · /containers/cna/metrics/2/cvssV3_0

Affected products and versions

1 source assertion
{"cpes":["cpe:2.3:a:antlr:antlr4:*:*:*:*:*:*:*:*"],"modules":["tokenVocab Grammar Option Handler"],"product":"ANTLR4","vendor":"antlr","versions":[{"status":"affected","version":"4.13.0"},{"status":"affected","version":"4.13.1"},{"status":"affected","version":"4.13.2"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:e207ed61611d944e8cb0af21199783bd42901e8276d03850445532153c197c9f · sha256:369b2ec1b5ce4c16… · /containers/cna/affected/0

Provider-owned CVSS observations

4 source assertions
{"metric":{"baseScore":6.9,"baseSeverity":"MEDIUM","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P","version":"4.0"},"metric_type":"cvssV4_0"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:e207ed61611d944e8cb0af21199783bd42901e8276d03850445532153c197c9f · sha256:369b2ec1b5ce4c16… · /containers/cna/metrics/0/cvssV4_0
{"metric":{"baseScore":5.3,"baseSeverity":"MEDIUM","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:P/RL:X/RC:R","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:e207ed61611d944e8cb0af21199783bd42901e8276d03850445532153c197c9f · sha256:369b2ec1b5ce4c16… · /containers/cna/metrics/1/cvssV3_1
{"metric":{"baseScore":5,"vectorString":"AV:N/AC:L/Au:N/C:P/I:N/A:N/E:POC/RL:ND/RC:UR","version":"2.0"},"metric_type":"cvssV2_0"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:e207ed61611d944e8cb0af21199783bd42901e8276d03850445532153c197c9f · sha256:369b2ec1b5ce4c16… · /containers/cna/metrics/3/cvssV2_0
{"metric":{"baseScore":5.3,"baseSeverity":"MEDIUM","vectorString":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:P/RL:X/RC:R","version":"3.0"},"metric_type":"cvssV3_0"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:e207ed61611d944e8cb0af21199783bd42901e8276d03850445532153c197c9f · sha256:369b2ec1b5ce4c16… · /containers/cna/metrics/2/cvssV3_0

CWE assertions

1 source assertion
{"cweId":"CWE-22","description":"Path Traversal","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:e207ed61611d944e8cb0af21199783bd42901e8276d03850445532153c197c9f · sha256:369b2ec1b5ce4c16… · /containers/cna/problemTypes/0/descriptions/0

Source references

5 source assertions
{"tags":["exploit","issue-tracking"],"url":"https://github.com/wooyun123/wooyun/issues/8"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e207ed61611d944e8cb0af21199783bd42901e8276d03850445532153c197c9f · sha256:369b2ec1b5ce4c16… · /containers/cna/references/4
{"name":"CVE-2026-13503 | CVE Analysis and Report","tags":["third-party-advisory"],"url":"https://vuldb.com/cve/CVE-2026-13503"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e207ed61611d944e8cb0af21199783bd42901e8276d03850445532153c197c9f · sha256:369b2ec1b5ce4c16… · /containers/cna/references/2
{"name":"Submit #838686 | antlr ANTLR4 4.13.2 Path Traversal tokenVocab File Read","tags":["third-party-advisory"],"url":"https://vuldb.com/submit/838686"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e207ed61611d944e8cb0af21199783bd42901e8276d03850445532153c197c9f · sha256:369b2ec1b5ce4c16… · /containers/cna/references/3
{"name":"VDB-374497 | antlr ANTLR4 tokenVocab Grammar Option TokenVocabParser.java getImportedVocabFile path traversal","tags":["vdb-entry","technical-description"],"url":"https://vuldb.com/vuln/374497"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e207ed61611d944e8cb0af21199783bd42901e8276d03850445532153c197c9f · sha256:369b2ec1b5ce4c16… · /containers/cna/references/0
{"name":"VDB-374497 | CTI Indicators (IOB, IOC, TTP, IOA)","tags":["signature","permissions-required"],"url":"https://vuldb.com/vuln/374497/cti"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e207ed61611d944e8cb0af21199783bd42901e8276d03850445532153c197c9f · sha256:369b2ec1b5ce4c16… · /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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