GHSA-j88v-2chj-qfwx
pgx: SQL Injection via placeholder confusion with dollar quoted string literals
At a glance
- Published
- Updated
- CVE
- CVE-2026-41889
- Aliases
- GO-2026-5004
- CVSS_V4
- CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N
Description
### Impact SQL Injection can occur when: 1. The non-default simple protocol is used. 2. A dollar quoted string literal is used in the SQL query. 3. That string literal contains text that would be would be interpreted as a placeholder outside of a string literal. 4. The value of that placeholder is controllable by the attacker. e.g. ```go attackValue := `$tag$; drop table canary; --` _, err = tx.Exec(ctx, `select $tag$ $1 $tag$, $1`, pgx.QueryExecModeSimpleProtocol, attackValue) ``` This is unlikely to occur outside of a contrived scenario. ### Patches The problem is resolved in v5.9.2. ### Workarounds Do not use the simple protocol to execute queries matching all the above conditions.
Affected packages
| Package | Versions |
|---|---|
| Go · github.com/jackc/pgx/v5 | introduced 0, fixed 5.9.2 |
| Go · github.com/jackc/pgx/v4 | introduced 0, last affected 4.18.3 |
| Go · github.com/jackc/pgx | introduced 0, last affected 3.6.2 |
References
- https://github.com/jackc/pgx/security/advisories/GHSA-j88v-2chj-qfwx WEB
- https://nvd.nist.gov/vuln/detail/CVE-2026-41889 ADVISORY
- https://github.com/jackc/pgx/commit/60644f84918a8af66d14a4b0d865d4edafd955da WEB
- https://github.com/jackc/pgx PACKAGE
- https://github.com/jackc/pgx/releases/tag/v5.9.2 WEB
Sources
| Source | Licence |
|---|---|
| OSV.dev | CC-BY 4.0 — GitHub Advisory Database |