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fix(plugins): add regex length limit (#7802)

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This commit is contained in:
Ville Vesilehto
2026-01-05 19:48:48 +02:00
committed by GitHub
parent adba778626
commit b723bd94d4
15 changed files with 117 additions and 3 deletions
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3
plugin/rewrite/cname_target.go
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@@ -144,6 +144,9 @@ func newCNAMERule(nextAction string, args ...string) (Rule, error) {
Upstream: upstream.New(),
}
if rewriteType == RegexMatch {
if len(paramFromTarget) > maxRegexpLen {
return nil, fmt.Errorf("regex pattern too long in a cname rule: %d > %d", len(paramFromTarget), maxRegexpLen)
}
re, err := regexp.Compile(paramFromTarget)
if err != nil {
return nil, fmt.Errorf("invalid cname rewrite regex pattern: %w", err)