← Vulnerability feed

Vulnerability record · CVE-2026-63443 · published 15 September 2026

CVE-2026-63443: Incorrect authorization vulnerability

Coder allows organizations to provision remote development environments via Terraform. Prior to 2.29.19, 2.32.9, 2.33.10, and 2.34.4, agentConn.apiClient() follows redirects while its custom transport accepts the host from the redirected request URL when the port is the workspace agent HTTP API port 4. An authenticated user who controls a modified workspace agent and knows another online agent's UUID can derive the victim's tailnet address and redirect control-plane requests to that agent. HTTP 301, 302, and 303 redirects can redirect read requests, while HTTP 307 and 308 preserve replayable write and process-start requests. The redirected workspace agent file APIs can read or write files as the victim workspace user, and affected versions exposing the workspace agent process API can execute commands after a redirected file write, crossing workspace and tenant boundaries. This issue is fixed in versions 2.29.19, 2.32.9, 2.33.10, and 2.34.4.

8.3 CVSS 3.1 High EPSS 0.76% · top 46.5% CWE-863 · Incorrect authorizationCWE-918 · Server-side request forgery (SSRF) Received
8.3CVSS 3.1 base score
0.76%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
15References
15 Sep 2026Last modified by NVD

Description

Coder allows organizations to provision remote development environments via Terraform. Prior to 2.29.19, 2.32.9, 2.33.10, and 2.34.4, agentConn.apiClient() follows redirects while its custom transport accepts the host from the redirected request URL when the port is the workspace agent HTTP API port 4. An authenticated user who controls a modified workspace agent and knows another online agent's UUID can derive the victim's tailnet address and redirect control-plane requests to that agent. HTTP 301, 302, and 303 redirects can redirect read requests, while HTTP 307 and 308 preserve replayable write and process-start requests. The redirected workspace agent file APIs can read or write files as the victim workspace user, and affected versions exposing the workspace agent process API can execute commands after a redirected file write, crossing workspace and tenant boundaries. This issue is fixed in versions 2.29.19, 2.32.9, 2.33.10, and 2.34.4.

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L

References

LinkTags
https://github.com/coder/coder/commit/2312b67bc52c4e314c18c4b4be5dcf5500c94ad7
https://github.com/coder/coder/commit/812549d671d0f5a0b45adcee860d37b70aaddccd
https://github.com/coder/coder/commit/ec3ba84c0002f47dd979c073cde1ab345acbaea5
https://github.com/coder/coder/commit/eeb2624549ddb85538e493af3e678fdb185a809f
https://github.com/coder/coder/commit/f8bdec5add4711650d5bfb6ff93d0cc9d7821c81
https://github.com/coder/coder/pull/26600
https://github.com/coder/coder/pull/26611
https://github.com/coder/coder/pull/26612
https://github.com/coder/coder/pull/26613
https://github.com/coder/coder/pull/26622
https://github.com/coder/coder/releases/tag/v2.29.19
https://github.com/coder/coder/releases/tag/v2.32.9
https://github.com/coder/coder/releases/tag/v2.33.10
https://github.com/coder/coder/releases/tag/v2.34.4
https://github.com/coder/coder/security/advisories/GHSA-qrwj-vh9x-gw5v

Track CVE-2026-63443 inside VULONE

Watch it alongside the ransomware crews, C2 infrastructure and forum chatter that reference it, query it through the API and pull it into your SIEM over TAXII.

Start free Open in platform

Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.1CVE-2026-71362Adobe commerce incorrect authorization vulnerabilityAdobe Commerce is affected by an Incorrect Authorization vulnerability that could result in privilege escalation. An attacker could leverage this vul…KEVEPSS 88%8.8CVE-2026-42016JFrog Artifactory token scope bypass enables privilege escalationJFrog Artifactory (Self Hosted) before 7.133.11 validates a token's signature and issuer but not its scope, so a token can be used for actions beyond…KEVEPSS 8.6%analysed10.0CVE-2025-54253Adobe Experience Manager Forms misconfiguration allows pre-auth code executionAdobe Experience Manager Forms 6.5.23 and earlier contain a misconfiguration (CWE-863, incorrect authorization) that lets an attacker bypass security…KEVEPSS 88%analysed5.4CVE-2025-55177WhatsApp iOS and Mac linked-device sync authorization flawWhatsApp for iOS, WhatsApp Business for iOS and WhatsApp for Mac fail to fully authorize linked-device synchronization messages, letting an unrelated…KEVEPSS 4.3%analysed8.6CVE-2025-21480Qualcomm GPU micronode memory corruption via unauthorized command executionA memory corruption flaw in Qualcomm's GPU micronode is caused by incorrect authorization (CWE-863), allowing an unauthorized command sequence to be …KEVEPSS 0.46%analysed8.6CVE-2025-21479Qualcomm GPU micronode memory corruption via unauthorized command executionQualcomm chipsets contain an incorrect authorization flaw in the GPU micronode that allows memory corruption when a specific sequence of commands is …KEVEPSS 0.84%analysed6.1CVE-2025-24200Apple iOS and iPadOS authorization flaw disables USB Restricted ModeAn incorrect authorization issue in Apple iOS and iPadOS is addressed through improved state management. A physical attacker can disable USB Restrict…KEVEPSS 4.5%analysed7.5CVE-2024-21287Oracle Agile PLM Framework incorrect authorization exposes dataOracle Agile PLM Framework 9.3.6 contains an incorrect authorization flaw in the Software Development Kit / Process Extension component. An unauthent…KEVEPSS 1.7%analysed

Source: NIST National Vulnerability Database (record CVE-2026-63443), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.