Editor hang via Lasso tokenizer infinite loop
Published Aug 31, 2026 · Updated Aug 31, 2026
Infinite loop in the Lasso tokenizer in Bare Bones Software BBEdit 15.5.0 through 15.5.5 allows context-dependent attackers to hang the editor. The tokenizer enters a nonterminating loop while processing untrusted Lasso content, but public sources do not disclose the triggering token pattern or unreachable exit condition. A user must open or otherwise cause BBEdit to tokenize attacker-supplied content; the reported effect is an application hang without confidentiality or integrity loss.
Summary
What happened
Infinite loop in the Lasso tokenizer in Bare Bones Software BBEdit 15.5.0 through 15.5.5 allows context-dependent attackers to hang the editor. The tokenizer enters a nonterminating loop while processing untrusted Lasso content, but public sources do not disclose the triggering token pattern or unreachable exit condition. A user must open or otherwise cause BBEdit to tokenize attacker-supplied content; the reported effect is an application hang without confidentiality or integrity loss.
The record
- CVE
- CVE-2026-82605
- Published
- Aug 31, 2026
- Updated
- Aug 31, 2026
- Vendor
- Bare Bones Software
- Product
- BBEdit
- Classifications
- CWE-835, CWE-404, T1204.002
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Aug 31, 2026CVE publishedPublication date reported by the CVE source.
- Aug 31, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=15.5.0
- Affected versionversion=15.5.1
- Affected versionversion=15.5.2
- Affected versionversion=15.5.3
- Affected versionversion=15.5.4
- Affected versionversion=15.5.5
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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