CVE-2026-33769 | withastro up to 5.18.0 Image Optimization Endpoint information disclosure (GHSA-g735-7g2w-hh3f)

VDB-352840 · CVE-2026-33769 · GHSA-G735-7G2W-HH3F WITHASTRO UP TO 5.18.0 IMAGE OPTIMIZATION ENDPOINT INFORMATION DISCLOSURE HISTORYDIFFRELATEJSONXMLCTI CVSS Meta Temp Score Current Exploit Price (≈) CTI Interest Score 5.1 $0-$5k 0.96+ Summaryinfo A vulnerability described as problematic has been identified in withastro astro up to 5.18.0. This issue affects some unknown processing of the component Image Optimization Endpoint. Executing a manipulation can lead to information disclosure. This vulnerability is registered as CVE-2026-33769. It is possible to launch the attack remotely. No exploit is available. Upgrading the affected component is recommended. Detailsinfo A vulnerability has been found in withastro astro up to 5.18.0 and classified as problematic. This vulnerability affects an unknown code block of the component Image Optimization Endpoint. The manipulation with an unknown input leads to a information disclosure vulnerability. The CWE definition for the vulnerability is CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. As an impact it is known to affect confidentiality. CVE summarizes: Astro is a web framework. From version 2.10.10 to before version 5.18.1, this issue concerns Astro's remotePatterns path enforcement for remote URLs used by server-side fetchers such as the image optimization endpoint. The path matching logic for /* wildcards is unanchored, so a pathname that contains the allowed prefix later in the path can still match. As a result, an attacker can fetch paths outside the intended allowlisted prefix on an otherwise allowed host. This issue has been patched in version 5.18.1. The advisory is shared for download at github.com. This vulnerability was named CVE-2026-33769 since 03/23/2026. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1592. Upgrading to version 5.18.1 eliminates this vulnerability. The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-14984). Productinfo Vendor withastro Name astro Version 5.0 5.1 5.2 5.3 5.4 5.5 5.6 5.7 5.8 5.9 5.10 5.11 5.12 5.13 5.14 5.15 5.16 5.17 5.18.0 Website Product: https://github.com/withastro/astro/ CPE 2.3info 🔒 🔒 🔒 CPE 2.2info 🔒 🔒 🔒 CVSSv4info VulDB Vector: 🔒 VulDB Reliability: 🔍 CNA CVSS-B Score: 🔒 CNA CVSS-BT Score: 🔒 CNA Vector: 🔒 CVSSv3info VulDB Meta Base Score: 5.3 VulDB Meta Temp Score: 5.1 VulDB Base Score: 5.3 VulDB Temp Score: 5.1 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: Information disclosure CWE: CWE-200 / CWE-284 / CWE-266 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: astro 5.18.1 Timelineinfo 03/23/2026 CVE reserved 03/24/2026 +1 days Advisory disclosed 03/24/2026 +0 days VulDB entry created 03/24/2026 +0 days VulDB entry last update Sourcesinfo Product: github.com Advisory: GHSA-g735-7g2w-hh3f Status: Confirmed CVE: CVE-2026-33769 (🔒) GCVE (CVE): GCVE-0-2026-33769 GCVE (VulDB): GCVE-100-352840 EUVD: 🔒 Entryinfo Created: 03/24/2026 20:48 Updated: 03/24/2026 21:20 Changes: 03/24/2026 20:48 (68), 03/24/2026 21:20 (1) Complete: 🔍 Cache ID: 99:CAA:101 Discussion No comments yet. Languages: en. Please log in to comment. ◂ PreviousOverviewNext ▸