Harshit retweetledi

2 weeks ago, I was debugging something @CodeAntAI code reviewer flagged.
It flagged a regex issue in the simple-git repo.
12.4 million weekly downloads.
The flag: "This regex guards a case-insensitive system using case-sensitive matching."
I almost scrolled past it. I didn't.
One hour later I had a working remote code execution POC ready.
Here's the thing, simple-git had already fixed this. Twice.
CVE-2022-25912. CVE-2022-25860.
Both attempted to block the dangerous `ext::` Git protocol using a regex.
- The regex used [a-z]. Case-sensitive.
- Git config keys are case-insensitive.
So protocol.allow=always → blocked.
PROTOCOL.ALLOW=always → full remote code execution.
The fix that shipped? One character. Adding '/i' to the regex flag.
That's the entire diff.
73% of all simple-git installs, roughly 9 million downloads per week, are still running the vulnerable versions right now.
The advisory hasn't hit NVD yet. Which means every scanner in your stack is currently blind to it.
Snyk. SonarQube. Checkmarx. All blind.
Not because they’re bad products.
Because they rely on known CVEs.
If the CVE doesn’t exist yet, the pattern doesn’t exist yet.
This is CVE-2026-28292. CVSS 9.8 Critical.
Five days before this, we disclosed CVE-2026-29000. CVSS 10.0. Authentication bypass in pac4j-jwt. Different ecosystem. Different vulnerability class.
Rule-based scanners ask: "Does this match a known bad pattern?"
AI code review asks: "Does this code do what it's supposed to do?"
A case-sensitive regex guarding a case-insensitive syste, isn't a known pattern.
It's a logic gap.
A spec vs implementation mismatch.
That's exactly what CodeAnt AI catches, and exactly what everything else misses.
So far we've filed:
- 100+ vulnerabilities
- Across npm, PyPI, Maven, NuGet
- 1.85B monthly downloads affected
Patch ≠ Fix.
Massive respect to Steve (steveukx), 4 days from report to patch. Open-source maintainers are the unsung backbone of this entire industry.
If you use simple-git: npm install simple-git@latest. Do it now.
Full writeup in the comments. 👇

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