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CVE-2026-54890

Integer Underflow (Wrap or Wraparound) vulnerability in erlang otp erlang/otp (erts modules), erlang otp erts (erts modules) allows Forced Integer Overflow, Excessive Allocation. This vulnerability is associated with program files erts/emulator/beam/external.c, emulator/beam/external.c. The BIT_BINARY_EXT tag (77) handler in the External Term Format (ETF) decoder accepts an encoding with both length and trailing-bits fields set to zero. The subsequent computation of the bitstring size underflow
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:1a93ff90694c60fde9bdedf2ca37da361aefa6ceca7aa11ebe20f5d02c7d2c87
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
2

Preserved source conflicts

No provider value was silently selected as the winner.

affected · 2 assertions

{"collectionURL":"https://github.com","cpes":["cpe:2.3:a:erlang:erlang\\/otp:*:*:*:*:*:*:*:*"],"defaultStatus":"unaffected","modules":["erts"],"packageName":"erlang/otp","packageURL":"pkg:github/erlang/otp","product":"OTP","programFiles":["erts/emulator/beam/external.c"],"programRoutines":[{"name":"erlang:binary_to_term/1"},{"name":"erlang:binary_to_term/2"}],"repo":"https://github.com/erlang/otp","vendor":"Erlang","versions":[{"changes":[{"at":"27.3.4.15","status":"unaffected"},{"at":"28.5.0.4","status":"unaffected"},{"at":"29.0.4","status":"unaffected"}],"lessThan":"*","status":"affected","v…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:ee5be1bcebc03747107adfe1c651be9c8d2a51c1cceee797c927eeefcc6f9eaf · sha256:2087af5962f8b9e1… · /containers/cna/affected/1

{"cpes":["cpe:2.3:a:erlang:erlang\\/otp:*:*:*:*:*:*:*:*"],"defaultStatus":"unaffected","modules":["erts"],"packageName":"erts","packageURL":"pkg:otp/erts?repository_url=https:%2F%2Fgithub.com%2Ferlang%2Fotp&vcs_url=git%20https:%2F%2Fgithub.com%2Ferlang%2Fotp.git","product":"OTP","programFiles":["emulator/beam/external.c"],"programRoutines":[{"name":"erlang:binary_to_term/1"},{"name":"erlang:binary_to_term/2"}],"repo":"https://github.com/erlang/otp","vendor":"Erlang","versions":[{"changes":[{"at":"15.2.7.11","status":"unaffected"},{"at":"16.4.0.4","status":"unaffected"},{"at":"17.0.4","status":…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:ee5be1bcebc03747107adfe1c651be9c8d2a51c1cceee797c927eeefcc6f9eaf · sha256:2087af5962f8b9e1… · /containers/cna/affected/0
cwe · 3 assertions

{"cweId":"CWE-1284","description":"CWE-1284 Improper Validation of Specified Quantity in Input","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:ee5be1bcebc03747107adfe1c651be9c8d2a51c1cceee797c927eeefcc6f9eaf · sha256:2087af5962f8b9e1… · /containers/cna/problemTypes/0/descriptions/2

{"cweId":"CWE-191","description":"CWE-191 Integer Underflow (Wrap or Wraparound)","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:ee5be1bcebc03747107adfe1c651be9c8d2a51c1cceee797c927eeefcc6f9eaf · sha256:2087af5962f8b9e1… · /containers/cna/problemTypes/0/descriptions/0

{"cweId":"CWE-789","description":"CWE-789 Memory Allocation with Excessive Size Value","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:ee5be1bcebc03747107adfe1c651be9c8d2a51c1cceee797c927eeefcc6f9eaf · sha256:2087af5962f8b9e1… · /containers/cna/problemTypes/0/descriptions/1

Affected products and versions

2 source assertions
{"collectionURL":"https://github.com","cpes":["cpe:2.3:a:erlang:erlang\\/otp:*:*:*:*:*:*:*:*"],"defaultStatus":"unaffected","modules":["erts"],"packageName":"erlang/otp","packageURL":"pkg:github/erlang/otp","product":"OTP","programFiles":["erts/emulator/beam/external.c"],"programRoutines":[{"name":"erlang:binary_to_term/1"},{"name":"erlang:binary_to_term/2"}],"repo":"https://github.com/erlang/otp","vendor":"Erlang","versions":[{"changes":[{"at":"27.3.4.15","status":"unaffected"},{"at":"28.5.0.4","status":"unaffected"},{"at":"29.0.4","status":"unaffected"}],"lessThan":"*","status":"affected","v…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:ee5be1bcebc03747107adfe1c651be9c8d2a51c1cceee797c927eeefcc6f9eaf · sha256:2087af5962f8b9e1… · /containers/cna/affected/1
{"cpes":["cpe:2.3:a:erlang:erlang\\/otp:*:*:*:*:*:*:*:*"],"defaultStatus":"unaffected","modules":["erts"],"packageName":"erts","packageURL":"pkg:otp/erts?repository_url=https:%2F%2Fgithub.com%2Ferlang%2Fotp&vcs_url=git%20https:%2F%2Fgithub.com%2Ferlang%2Fotp.git","product":"OTP","programFiles":["emulator/beam/external.c"],"programRoutines":[{"name":"erlang:binary_to_term/1"},{"name":"erlang:binary_to_term/2"}],"repo":"https://github.com/erlang/otp","vendor":"Erlang","versions":[{"changes":[{"at":"15.2.7.11","status":"unaffected"},{"at":"16.4.0.4","status":"unaffected"},{"at":"17.0.4","status":…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:ee5be1bcebc03747107adfe1c651be9c8d2a51c1cceee797c927eeefcc6f9eaf · sha256:2087af5962f8b9e1… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackRequirements":"PRESENT","attackVector":"NETWORK","baseScore":8.2,"baseSeverity":"HIGH","privilegesRequired":"NONE","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","vectorString":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"HIGH","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE"},"metric_type":"cvssV4_0"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:ee5be1bcebc03747107adfe1c651be9c8d2a51c1cceee797c927eeefcc6f9eaf · sha256:2087af5962f8b9e1… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

3 source assertions
{"cweId":"CWE-1284","description":"CWE-1284 Improper Validation of Specified Quantity in Input","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:ee5be1bcebc03747107adfe1c651be9c8d2a51c1cceee797c927eeefcc6f9eaf · sha256:2087af5962f8b9e1… · /containers/cna/problemTypes/0/descriptions/2
{"cweId":"CWE-191","description":"CWE-191 Integer Underflow (Wrap or Wraparound)","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:ee5be1bcebc03747107adfe1c651be9c8d2a51c1cceee797c927eeefcc6f9eaf · sha256:2087af5962f8b9e1… · /containers/cna/problemTypes/0/descriptions/0
{"cweId":"CWE-789","description":"CWE-789 Memory Allocation with Excessive Size Value","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:ee5be1bcebc03747107adfe1c651be9c8d2a51c1cceee797c927eeefcc6f9eaf · sha256:2087af5962f8b9e1… · /containers/cna/problemTypes/0/descriptions/1

Source references

5 source assertions
{"tags":["related"],"url":"https://cna.erlef.org/cves/CVE-2026-54890.html"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:ee5be1bcebc03747107adfe1c651be9c8d2a51c1cceee797c927eeefcc6f9eaf · sha256:2087af5962f8b9e1… · /containers/cna/references/1
{"tags":["patch"],"url":"https://github.com/erlang/otp/commit/dc1bf9344c0ce62717cf60866590cea0242780fd"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:ee5be1bcebc03747107adfe1c651be9c8d2a51c1cceee797c927eeefcc6f9eaf · sha256:2087af5962f8b9e1… · /containers/cna/references/4
{"tags":["vendor-advisory","related"],"url":"https://github.com/erlang/otp/security/advisories/GHSA-54pw-5645-jh86"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:ee5be1bcebc03747107adfe1c651be9c8d2a51c1cceee797c927eeefcc6f9eaf · sha256:2087af5962f8b9e1… · /containers/cna/references/0
{"tags":["related"],"url":"https://osv.dev/vulnerability/EEF-CVE-2026-54890"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:ee5be1bcebc03747107adfe1c651be9c8d2a51c1cceee797c927eeefcc6f9eaf · sha256:2087af5962f8b9e1… · /containers/cna/references/2
{"tags":["x_version-scheme"],"url":"https://www.erlang.org/doc/system/versions.html#order-of-versions"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:ee5be1bcebc03747107adfe1c651be9c8d2a51c1cceee797c927eeefcc6f9eaf · sha256:2087af5962f8b9e1… · /containers/cna/references/3

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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