Unescaped backslash allows LIKE wildcard injection in AshSql string search (CVE-2026-78691) | HOL Guard CVE

Unknown severity · Source severity not reportedCVE-2026-78691

Unescaped backslash allows LIKE wildcard injection in AshSql string search

Answer in brief

CVE-2026-78691 records a Unknown severity vulnerability in Unescaped backslash allows LIKE wildcard injection in AshSql string search. The current sources do not mark it as known exploited. The current feed maps ash-project/ash_sql (generic), ash-project/ash_sql (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Aug 30, 2026Updated Aug 30, 2026Source checked Aug 30, 2026First seen by HOL Aug 30, 2026Material review Aug 30, 2026

Upstream Advisory

Key facts

Risk: Unknown severitySource severity not reported
Exploitation: Not marked as known exploited
Affected software: 2 mapped packages or products
Fix availability: Available

Why this deserves its current priority

A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps ash-project/ash_sql (generic), ash-project/ash_sql (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
ash-project/ash_sqlgeneric	>=0.1.1-rc.10 <0.7.1	0.7.1
ash-project/ash_sqlgeneric	>=cfc7da474c5be2190fd62664a83a689377a8d512 <d95c55c64b1b42cc2fd30211a4913f3145156cd4	d95c55c64b1b42cc2fd30211a4913f3145156cd4

Recommended response

Check inventory. Check lockfiles and deployed manifests for ash-project/ash_sql, ash-project/ash_sql.
Review the reported fix. Update ash-project/ash_sql to 0.7.1; ash-project/ash_sql to d95c55c64b1b42cc2fd30211a4913f3145156cd4 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Aug 30, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Aug 30, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Aug 30, 2026

Sources and claim methodology

Upstream source description

Improper Neutralization of Special Elements in Data Query Logic vulnerability in ash-project ash_sql allows a user who supplies a search term to contains/2, string_starts_with/2, or string_ends_with/2 to inject live SQL LIKE wildcards, turning a literal substring search into an attacker-controlled pattern match. The escape helpers in AshSql.Expr prefix % and _ with a backslash but never escape a backslash already present in the input. Because backslash is the default LIKE escape character, the escaping defeats itself: the input \% becomes the pattern fragment \\%, where \\ is a literal backslash and the attacker's % remains a live wildcard. The search value stays parameterized, so this is confined to the LIKE pattern grammar rather than full SQL. An attacker can widen matches to probe values, slip past a negated contains(...) guard, or crash the query with a trailing lone backslash. This issue affects ash_sql: from 0.1.1-rc.10 before 0.7.1.

Quoted source text, attributed separately from HOL analysis.