Obstruct EXTRACT() field name deparse injection. The parser accepts any string as an EXTRACT() field name, but deparsing does not quote and escape it accordingly. To fix, quote and escape the field name during deparsing as needed. It might be a good idea to validate the field name during parsing and deparsing, too, but that is left as a future exercise.
Reported-by: Ben Morris in collaboration with Claude and Anthropic Research Author: Nathan Bossart <[email protected]> Reviewed-by: Tom Lane <[email protected]> Reviewed-by: Etsuro Fujita <[email protected]> Security: CVE-2026-15741 Backpatch-through: 14 Branch ------ REL_19_STABLE Details ------- https://git.postgresql.org/pg/commitdiff/a3832a7571013469dc81e35d0fe1c0066e86d893 Author: Nathan Bossart <[email protected]> Modified Files -------------- src/backend/utils/adt/ruleutils.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
