CVE-2026-15699 spencermountain compromise Public Root API extend.js nlp.extend prototype pollution
Remote attackers can achieve code execution via prototype pollution in the nlp.extend function of the compromise library.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-15699?
CVE-2026-15699 is a medium-severity code injection vulnerability in spencermountain compromise, published on 14 Jul 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
A vulnerability was identified in spencermountain compromise up to 14.15.1. Affected is the function nlp.extend of the file src/API/extend.js of the component Public Root API. The manipulation of the argument plugin leads to improperly controlled modification of object prototype attributes. Remote exploitation of the attack is possible. The exploit is publicly available and might be used. The identifier of the patch is b4644ab7179700df0607521f61c1ee9b5f78d89d. Applying a patch is the recommended action to fix this issue. The vendor was contacted early, responded in a very professional manner and quickly released a fixed version of the affected product.
Which versions are affected by CVE-2026-15699?
How do I fix CVE-2026-15699?
No fix has been published for CVE-2026-15699 yet. Limit exposure of the affected software until one is available.
Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.
Is CVE-2026-15699 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-15699 exists.
Sources
Also known as GHSA-29jc-r7wj-73vf.