CVE-2026-41510: high-severity vulnerability in corazawaf coraza
OWASP Coraza WAF: Silent argument drop at ArgumentLimit allows bypass of ARGS-targeted rules via parameter flooding
Published · Updated
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 7.2epss 0.4%
OWASP Coraza WAF is a golang modsecurity compatible web application firewall library. From 3.0.0 until 3.8.1, Coraza silently drops arguments after SecArgumentsLimit in internal/corazawaf/transaction.go, while internal/bodyprocessors/urlencoded.go writes ARGS_POST without enforcing the cap. The flaw is triggered when an unauthenticated attacker sends more arguments than SecArgumentsLimit or supplies bodies that expand beyond the configured argument and flattening budgets. An unauthenticated attacker can flood requests with arguments so excess values are silently omitted from ARGS, ARGS_GET, ARGS_NAMES, ARGS_GET_NAMES, ARGS_POST, or ARGS_PATH before security rules inspect them; affected urlencoded and JSON processing can also consume excessive memory. The omission can bypass WAF rules protecting the downstream application, and unbounded or amplified argument processing can cause memory consumption and service degradation. This issue is fixed in version 3.8.1.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:L
Affected products
corazawaf · corazaRelated CVEs — corazawaf coraza
In the same product, most dangerous first.
CVE-2023-40586HIGHgo package github.com/corazawaf/coraza is vulnerable to denial of serviceEPSS 0.7%CVE-2026-41508MEDIUMOWASP Coraza WAF: Truncated multipart body bypasses MULTIPART_STRICT_ERROR (rule 200003) via silent io.ErrUnexpectedEOF handlingEPSS 0.5%CVE-2026-107826HIGHOWASP Coraza WAF: JSON body processor: argument-limit truncation reopens an unbounded-depth gjson.Valid stack overflow (process crash)EPSS 0.5%CVE-2026-107833MEDIUMOWASP Coraza WAF: Unbounded recursion in JSON response body processor causes CPU exhaustionEPSS 0.4%CVE-2026-41504MEDIUMOWASP Coraza WAF: Native audit-log format allows CRLF injection and log forgery via request body and header fieldsEPSS 0.4%CVE-2026-104774MEDIUMOWASP Coraza WAF: jsDecode Off-by-One in Octal Escape Handling Enables WAF BypassEPSS 0.3%
References
https://github.com/corazawaf/coraza/commit/146c2f79f39ad16f13787e7d67ad400f8d8cb9a3https://github.com/corazawaf/coraza/commit/b98359bb7e7606c95100dcc7ad490d2d624e6deahttps://github.com/corazawaf/coraza/releases/tag/v3.8.1https://github.com/corazawaf/coraza/security/advisories/GHSA-6r3q-mjv7-xr8m