CVE-2026-5418 | appsmithorg appsmith up to 1.97 Dashboard WebClientUtils.java computeDisallowedHosts server-side request forgery (GHSA-9m89-5jw7-q5cr)

VDB-354855 · CVE-2026-5418 · GHSA-9M89-5JW7-Q5CR APPSMITHORG APPSMITH UP TO 1.97 DASHBOARD WEBCLIENTUTILS.JAVA COMPUTEDISALLOWEDHOSTS SERVER-SIDE REQUEST FORGERY HISTORYDIFFRELATEJSONXMLCTI CVSS Meta Temp Score Current Exploit Price (≈) CTI Interest Score 6.6 $0-$5k 1.69+ Summaryinfo A vulnerability marked as critical has been reported in appsmithorg appsmith up to 1.97. The affected element is the function computeDisallowedHosts of the file app/server/appsmith-interfaces/src/main/java/com/appsmith/util/WebClientUtils.java of the component Dashboard. Performing a manipulation results in server-side request forgery. This vulnerability is known as CVE-2026-5418. Remote exploitation of the attack is possible. Furthermore, an exploit is available. It is suggested to upgrade the affected component. The vendor was contacted early, responded in a very professional manner and quickly released a fixed version of the affected product. Detailsinfo A vulnerability, which was classified as critical, was found in appsmithorg appsmith up to 1.97. This affects the function computeDisallowedHosts of the file app/server/appsmith-interfaces/src/main/java/com/appsmith/util/WebClientUtils.java of the component Dashboard. The manipulation with an unknown input leads to a server-side request forgery vulnerability. CWE is classifying the issue as CWE-918. The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination. This is going to have an impact on confidentiality, integrity, and availability. It is possible to read the advisory at github.com. This vulnerability is uniquely identified as CVE-2026-5418. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details and a public exploit are known. The exploit is shared for download at github.com. It is declared as proof-of-concept. The vendor was contacted early, responded in a very professional manner and quickly released a fixed version of the affected product. Upgrading to version 1.99 eliminates this vulnerability. Productinfo Vendor appsmithorg Name appsmith Version 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 1.10 1.11 1.12 1.13 1.14 1.15 1.16 1.17 1.18 1.19 1.20 1.21 1.22 1.23 1.24 1.25 1.26 1.27 1.28 1.29 1.30 1.31 1.32 1.33 1.34 1.35 1.36 1.37 1.38 1.39 1.40 1.41 1.42 1.43 1.44 1.45 1.46 1.47 1.48 1.49 1.50 1.51 1.52 1.53 1.54 1.55 1.56 1.57 1.58 1.59 1.60 1.61 1.62 1.63 1.64 1.65 1.66 1.67 1.68 1.69 1.70 1.71 1.72 1.73 1.74 1.75 1.76 1.77 1.78 1.79 1.80 1.81 1.82 1.83 1.84 1.85 1.86 1.87 1.88 1.89 1.90 1.91 1.92 1.93 1.94 1.95 1.96 1.97 Website Product: https://github.com/appsmithorg/appsmith/ CPE 2.3info 🔒 🔒 🔒 CPE 2.2info 🔒 🔒 🔒 CVSSv4info VulDB Vector: 🔒 VulDB Reliability: 🔍 CVSSv3info VulDB Meta Base Score: 7.3 VulDB Meta Temp Score: 6.6 VulDB Base Score: 7.3 VulDB Temp Score: 6.6 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: Server-side request forgery CWE: CWE-918 CAPEC: 🔒 ATT&CK: 🔒 Physical: No Local: No Remote: Yes Availability: 🔒 Access: Public Status: Proof-of-Concept Download: 🔒 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: appsmith 1.99 Timelineinfo 04/02/2026 Advisory disclosed 04/02/2026 +0 days VulDB entry created 04/02/2026 +0 days VulDB entry last update Sourcesinfo Product: github.com Advisory: GHSA-9m89-5jw7-q5cr Status: Confirmed CVE: CVE-2026-5418 (🔒) GCVE (CVE): GCVE-0-2026-5418 GCVE (VulDB): GCVE-100-354855 scip Labs: https://www.scip.ch/en/?labs.20161013 Entryinfo Created: 04/02/2026 13:10 Changes: 04/02/2026 13:10 (60) Complete: 🔍 Submitter: Executio Cache ID: 99:F7A:101 Submitinfo Accepted Submit #780190: appsmithorg appsmith v1.97 Server-Side Request Forgery (by Executio) Discussion No comments yet. Languages: en. Please log in to comment. ◂ PreviousOverviewNext ▸