CVE-2026-31908 | Apache APISIX up to 3.15.0 Forward Auth Plugin injection

VDB-357292 · CVE-2026-31908 · GCVE-0-2026-31908 APACHE APISIX UP TO 3.15.0 FORWARD AUTH PLUGIN INJECTION HISTORYDIFFRELATEJSONXMLCTI CVSS Meta Temp Score Current Exploit Price (≈) CTI Interest Score 6.0 $0-$5k 3.16 Summaryinfo A vulnerability described as critical has been identified in Apache APISIX up to 3.15.0. Affected by this issue is some unknown functionality of the component Forward Auth Plugin. Executing a manipulation can lead to injection. This vulnerability is tracked as CVE-2026-31908. The attack can be launched remotely. No exploit exists. Upgrading the affected component is recommended. Detailsinfo A vulnerability classified as critical was found in Apache APISIX up to 3.15.0. This vulnerability affects an unknown code block of the component Forward Auth Plugin. The manipulation with an unknown input leads to a injection vulnerability. The CWE definition for the vulnerability is CWE-74. The product constructs all or part of a command, data structure, or record using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify how it is parsed or interpreted when it is sent to a downstream component. As an impact it is known to affect confidentiality, integrity, and availability. The advisory is shared for download at lists.apache.org. This vulnerability was named CVE-2026-31908. The exploitation appears to be easy. The attack can be initiated remotely. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 04/14/2026). The MITRE ATT&CK project declares the attack technique as T1055. Upgrading to version 3.16.0 eliminates this vulnerability. Productinfo Vendor Apache Name APISIX Version 3.0 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 3.10 3.11 3.12 3.13 3.14 3.15.0 License open-source Website Vendor: https://www.apache.org/ CPE 2.3info 🔒 🔒 🔒 CPE 2.2info 🔒 🔒 🔒 CVSSv4info VulDB Vector: 🔒 VulDB Reliability: 🔍 CVSSv3info VulDB Meta Base Score: 6.3 VulDB Meta Temp Score: 6.0 VulDB Base Score: 6.3 VulDB Temp Score: 6.0 VulDB Vector: 🔒 VulDB Reliability: 🔍 CVSSv2info Vector Complexity Authentication Confidentiality Integrity Availability Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock VulDB Base Score: 🔒 VulDB Temp Score: 🔒 VulDB Reliability: 🔍 Exploitinginfo Class: Injection CWE: CWE-74 / CWE-707 / CWE-20 CAPEC: 🔒 ATT&CK: 🔒 Physical: No Local: No Remote: Yes Availability: 🔒 Status: Not defined Price Prediction: 🔍 Current Price Estimation: 🔒 0-Day Unlock Unlock Unlock Unlock Today Unlock Unlock Unlock Unlock Threat Intelligenceinfo Interest: 🔍 Active Actors: 🔍 Active APT Groups: 🔍 Countermeasuresinfo Recommended: Upgrade Status: 🔍 0-Day Time: 🔒 Upgrade: APISIX 3.16.0 Timelineinfo 04/14/2026 Advisory disclosed 04/14/2026 +0 days VulDB entry created 04/14/2026 +0 days VulDB entry last update Sourcesinfo Vendor: apache.org Advisory: lists.apache.org Status: Confirmed CVE: CVE-2026-31908 (🔒) GCVE (CVE): GCVE-0-2026-31908 GCVE (VulDB): GCVE-100-357292 Entryinfo Created: 04/14/2026 09:10 Changes: 04/14/2026 09:10 (52) Complete: 🔍 Cache ID: 99:697:101 Discussion No comments yet. Languages: en. Please log in to comment. ◂ PreviousOverviewNext ▸