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CVE-2026-54886

Loop with Unreachable Exit Condition ('Infinite Loop') vulnerability in Erlang OTP ssh (ssh_sftpd module) allows an authenticated SFTP user to render an SFTP channel permanently unresponsive. The handle_data/4 function in ssh_sftpd contains a catch-all clause that accepts channel data of any type. When channel data with a non-zero type code (SSH_MSG_CHANNEL_EXTENDED_DATA) arrives with an empty pending buffer and a payload at or below the SFTP packet size limit, the clause tail-calls itself with
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:a11e29ab657545bba502296884d46a1beb3ff045ebaba865edcc824c4e10b399
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

{"cpes":["cpe:2.3:a:erlang:erlang\\/otp:*:*:*:*:*:*:*:*"],"defaultStatus":"unaffected","modules":["ssh_sftpd"],"packageName":"ssh","packageURL":"pkg:otp/ssh?repository_url=https:%2F%2Fgithub.com%2Ferlang%2Fotp&vcs_url=git%20https:%2F%2Fgithub.com%2Ferlang%2Fotp.git","product":"OTP","programFiles":["src/ssh_sftpd.erl"],"programRoutines":[{"name":"ssh_sftpd:handle_data/4"}],"repo":"https://github.com/erlang/otp","vendor":"Erlang","versions":[{"changes":[{"at":"6.0.2","status":"unaffected"},{"at":"5.5.2.2","status":"unaffected"},{"at":"5.2.11.9","status":"unaffected"}],"lessThan":"*","status":"af…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:10f8297ea9ca85b96c0816e5598bb54d20e1a80e232955a6840fd9cb40a2c73a · sha256:e1d294eaa2eb57d3… · /containers/cna/affected/0

{"collectionURL":"https://github.com","cpes":["cpe:2.3:a:erlang:erlang\\/otp:*:*:*:*:*:*:*:*"],"defaultStatus":"unaffected","modules":["ssh_sftpd"],"packageName":"erlang/otp","packageURL":"pkg:github/erlang/otp","product":"OTP","programFiles":["lib/ssh/src/ssh_sftpd.erl"],"programRoutines":[{"name":"ssh_sftpd:handle_data/4"}],"repo":"https://github.com/erlang/otp","vendor":"Erlang","versions":[{"changes":[{"at":"29.0.3","status":"unaffected"},{"at":"28.5.0.3","status":"unaffected"},{"at":"27.3.4.14","status":"unaffected"}],"lessThan":"*","status":"affected","version":"17.0","versionType":"otp"…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:10f8297ea9ca85b96c0816e5598bb54d20e1a80e232955a6840fd9cb40a2c73a · sha256:e1d294eaa2eb57d3… · /containers/cna/affected/1
cwe · 2 assertions

{"cweId":"CWE-400","description":"CWE-400 Uncontrolled Resource Consumption","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:10f8297ea9ca85b96c0816e5598bb54d20e1a80e232955a6840fd9cb40a2c73a · sha256:e1d294eaa2eb57d3… · /containers/cna/problemTypes/0/descriptions/1

{"cweId":"CWE-835","description":"CWE-835 Loop with Unreachable Exit Condition ('Infinite Loop')","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:10f8297ea9ca85b96c0816e5598bb54d20e1a80e232955a6840fd9cb40a2c73a · sha256:e1d294eaa2eb57d3… · /containers/cna/problemTypes/0/descriptions/0

Affected products and versions

2 source assertions
{"cpes":["cpe:2.3:a:erlang:erlang\\/otp:*:*:*:*:*:*:*:*"],"defaultStatus":"unaffected","modules":["ssh_sftpd"],"packageName":"ssh","packageURL":"pkg:otp/ssh?repository_url=https:%2F%2Fgithub.com%2Ferlang%2Fotp&vcs_url=git%20https:%2F%2Fgithub.com%2Ferlang%2Fotp.git","product":"OTP","programFiles":["src/ssh_sftpd.erl"],"programRoutines":[{"name":"ssh_sftpd:handle_data/4"}],"repo":"https://github.com/erlang/otp","vendor":"Erlang","versions":[{"changes":[{"at":"6.0.2","status":"unaffected"},{"at":"5.5.2.2","status":"unaffected"},{"at":"5.2.11.9","status":"unaffected"}],"lessThan":"*","status":"af…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:10f8297ea9ca85b96c0816e5598bb54d20e1a80e232955a6840fd9cb40a2c73a · sha256:e1d294eaa2eb57d3… · /containers/cna/affected/0
{"collectionURL":"https://github.com","cpes":["cpe:2.3:a:erlang:erlang\\/otp:*:*:*:*:*:*:*:*"],"defaultStatus":"unaffected","modules":["ssh_sftpd"],"packageName":"erlang/otp","packageURL":"pkg:github/erlang/otp","product":"OTP","programFiles":["lib/ssh/src/ssh_sftpd.erl"],"programRoutines":[{"name":"ssh_sftpd:handle_data/4"}],"repo":"https://github.com/erlang/otp","vendor":"Erlang","versions":[{"changes":[{"at":"29.0.3","status":"unaffected"},{"at":"28.5.0.3","status":"unaffected"},{"at":"27.3.4.14","status":"unaffected"}],"lessThan":"*","status":"affected","version":"17.0","versionType":"otp"…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:10f8297ea9ca85b96c0816e5598bb54d20e1a80e232955a6840fd9cb40a2c73a · sha256:e1d294eaa2eb57d3… · /containers/cna/affected/1

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackVector":"NETWORK","baseScore":5.3,"baseSeverity":"MEDIUM","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N","version":"4.0"},"metric_type":"cvssV4_0"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:10f8297ea9ca85b96c0816e5598bb54d20e1a80e232955a6840fd9cb40a2c73a · sha256:e1d294eaa2eb57d3… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

2 source assertions
{"cweId":"CWE-400","description":"CWE-400 Uncontrolled Resource Consumption","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:10f8297ea9ca85b96c0816e5598bb54d20e1a80e232955a6840fd9cb40a2c73a · sha256:e1d294eaa2eb57d3… · /containers/cna/problemTypes/0/descriptions/1
{"cweId":"CWE-835","description":"CWE-835 Loop with Unreachable Exit Condition ('Infinite Loop')","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:10f8297ea9ca85b96c0816e5598bb54d20e1a80e232955a6840fd9cb40a2c73a · sha256:e1d294eaa2eb57d3… · /containers/cna/problemTypes/0/descriptions/0

Source references

5 source assertions
{"tags":["related"],"url":"https://cna.erlef.org/cves/CVE-2026-54886.html"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:10f8297ea9ca85b96c0816e5598bb54d20e1a80e232955a6840fd9cb40a2c73a · sha256:e1d294eaa2eb57d3… · /containers/cna/references/1
{"tags":["patch"],"url":"https://github.com/erlang/otp/commit/eaf9550b8ad4738b81149d3f617102d980c6dd18"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:10f8297ea9ca85b96c0816e5598bb54d20e1a80e232955a6840fd9cb40a2c73a · sha256:e1d294eaa2eb57d3… · /containers/cna/references/4
{"tags":["vendor-advisory","related"],"url":"https://github.com/erlang/otp/security/advisories/GHSA-7wp4-pc27-2vj9"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:10f8297ea9ca85b96c0816e5598bb54d20e1a80e232955a6840fd9cb40a2c73a · sha256:e1d294eaa2eb57d3… · /containers/cna/references/0
{"tags":["related"],"url":"https://osv.dev/vulnerability/EEF-CVE-2026-54886"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:10f8297ea9ca85b96c0816e5598bb54d20e1a80e232955a6840fd9cb40a2c73a · sha256:e1d294eaa2eb57d3… · /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:v2:10f8297ea9ca85b96c0816e5598bb54d20e1a80e232955a6840fd9cb40a2c73a · sha256:e1d294eaa2eb57d3… · /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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