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_15_STABLE Details ------- https://git.postgresql.org/pg/commitdiff/44ea6764be76ebb3d8dd01d60b5751acbe7b87d3 Author: Nathan Bossart <[email protected]> Modified Files -------------- src/backend/utils/adt/ruleutils.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
