CVE-2026-115845
MediumCVSS 6.4Exploitation Probability (EPSS)
Low risk23th percentile - higher than 23% of all known CVEs
Summary
An incomplete list of disallowed inputs in the Python code validator of the run_script tool in AWS MCP Server might allow an authenticated remote user to execute arbitrary code within their own isolated session environment via a crafted script. AWS fixed this issue service-side. No customer action is required.
Risk Assessment
An authenticated user could execute arbitrary code within their isolated session environment, potentially compromising data confidentiality or integrity within that session. Due to environment isolation, the risk to other customers is limited.
Recommendation
No customer action is required as AWS fixed the issue service-side. However, it is advisable to monitor AWS security bulletins to confirm the fix has been applied.
Related vulnerabilities
- CVE-2026-121953Critical
FreeRDP before 3.32.2 has a use-after-free in the client's rdpgfx dynamic virtual channel: a duplicate-name channel with a new ChannelId overwrites the listener's single callback slot, which rdpgfx_on_close frees without clearing. A malicious RDP server can open and close such a channel, then send a PDU on the original channel to crash the client or potentially execute code.
- CVE-2026-121952Critical
FreeRDP before 3.32.2 has an out-of-bounds write in the proxy because rdp_read_bitmap_cache_v2_capability_set rejects only numCellCaches values above 5, yet the bitmap cache v2 cell array is later accessed at fixed indices 0 through 4. A client connecting to the proxy can declare fewer than five cell caches in its Confirm Active, causing heap corruption, heap data leakage to the backend, or a crash.
- CVE-2026-122006Critical
The activestorage gem before 8.1.4.1 for Ruby on Rails, when ImageMagick attachment processing occurs, can allow server read and write operations (e.g., reading secret_key_base) because the ImageMagick analyzer runs when a file is attached, and there is not an ImageMagick security policy to block unintended functionality.
- CVE-2026-121640Critical
An Authentication Bypass by Capture-replay vulnerability in WatchGuard AuthPoint Gateway allows an attacker who has observed a legitimate request between AuthPoint Gateway components to replay it and perform unauthorized administrative actions, including disrupting authentication services.
- CVE-2026-121639Critical
A Missing Authentication for Critical Function vulnerability in WatchGuard AuthPoint Gateway allows a remote unauthenticated attacker with network access to the AuthPoint Gateway host to disrupt authentication services and delete the local directory synchronization configuration.
- CVE-2026-121638Critical
An Improper Certificate Validation vulnerability in WatchGuard AuthPoint Gateway allows an attacker with an on-path network position to intercept and modify communications between the AuthPoint Gateway and local authentication providers.
- CVE-2026-65555Critical
The Uncanny Toolkit for LearnDash plugin (through version 3.8.2) contains an incorrect privilege assignment vulnerability that allows privilege escalation. A low-privileged user can gain access to functionality reserved for higher roles.
- CVE-2026-119481Critical
The JetFormBuilder plugin (through version 3.6.7.1) contains an incorrect privilege assignment vulnerability enabling privilege escalation. A low-privileged user can perform actions reserved for higher roles.
- CVE-2026-114425Critical
SEPPmail Secure Email Gateway before 15.1.1 trusts a file path supplied in externally provided Large File Transfer attachment metadata. An unauthenticated remote sender can cause the mail-processing worker to disclose, move, or delete an accessible regular file when LFT is enabled and the message reaches an affected secure-mail processing path. The validated workers ran as root.
- CVE-2026-114424Critical
SEPPmail Secure Email Gateway before 15.1.1 can evaluate attacker-influenced replacement text as Perl code in sender or recipient replacement rules. An unauthenticated remote sender can execute operating-system commands in the mail-processing worker context when an active rule uses message-derived replacement data and its search condition matches. The validated worker context was root.
Original NVD description (English source)
An incomplete list of disallowed inputs in the Python code validator of the run_script tool in AWS MCP Server might allow an authenticated remote user to execute arbitrary code within their own isolated session environment via a crafted script. AWS fixed this issue service-side. No customer action is required.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS

