CVE-2026-105139
What it is
Obot 0.26.0 before 0.26.2 contains an authorization bypass vulnerability that allows authenticated users matching any vMCP profile to reach prompts and resources of ungranted components. Because profiles were enforced only on tools, attackers can access prompts, resources, and resource templates through the vMCP owner's shared component connection.
At a glance
- Exploitability
- Can be exploited over the network with a low-privilege account. Limited direct impact.
- Exploit odds
- 0.2% chance of exploitation in the next 30 days (EPSS).
- Fix
- A patch, advisory or fixed version is referenced. Upgrade or apply it.
Timeline
- PublishedDisclosed publicly on CVE.org and NVD
- Last updatedMost recent change to the record
Why it ranks here
- Exploited in the wild: no, CISA does not list it.
- Exploit odds: 0.2% in the next 30 days (EPSS).
- Severity: 5.3 MEDIUM (CVSS).
- Fix: a patch or advisory is linked.
Details
- Published
- Last modified
- Exploit probability
- 0.2% · EPSS, next 30 days
- Weakness
- CWE-863 · Incorrect authorization
- Record status
- Deferred
Attack profile CVSS 4.0 · 5.3
- Attack vector
- Network
- Complexity
- Low
- Attack requirements
- None
- Privileges needed
- Low
- User interaction
- None
- Confidentiality
- Low
- Integrity
- None
- Availability
- None
Raw vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Is it in your code?
Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.
Read https://cve-list.com/agent/cve/CVE-2026-105139.md and follow it. Check whether this project is affected by CVE-2026-105139. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.
Fix and advisories
- https://github.com/obot-platform/obot/commit/8d92701c2018a7b9dd6d692498fa5f41fdb912ea
- https://github.com/obot-platform/obot/releases/tag/v0.26.2
- https://github.com/obot-platform/obot/security/advisories/GHSA-xhpw-65qw-wj6m
References
- https://github.com/obot-platform/obot
- https://github.com/obot-platform/obot/blob/8cfac5d38baa4fa0719e7975b7542608ff8bc932/pkg/mcp/vmcp.go#L231
- https://github.com/obot-platform/obot/blob/8cfac5d38baa4fa0719e7975b7542608ff8bc932/pkg/mcp/vmcp.go#L97
- https://github.com/obot-platform/obot/commit/8d92701c2018a7b9dd6d692498fa5f41fdb912ea
- https://github.com/obot-platform/obot/releases/tag/v0.26.2
- https://github.com/obot-platform/obot/security/advisories/GHSA-xhpw-65qw-wj6m
- https://www.vulncheck.com/advisories/obot-0.26.0-before-0.26.2-authorization-bypass-via-vmcp-profile-prompts-and-resources