CVE-2026-27812: Sub2API is an AI API gateway platform designed to distribute and manage API quotas from AI product subscriptio

Q: How do I fix CVE-2026-27812?

sub2api: upgrade to 0.1.85. Exact commands for each OS are on this page.

Q: Is CVE-2026-27812 being exploited?

CVE-2026-27812 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-27812 affect?

CVE-2026-27812 affects sub2api. Severity is critical (CVSS 9.1). Sub2API is an AI API gateway platform designed to distribute and manage API quotas from AI product subscriptions. A vulnerability in versions prior to 0.1.85 is a Password Reset Poisoning (Host Header / Forwarded Header trust issue), which

Q: How urgent is CVE-2026-27812?

Priority 42/100. Critical severity; Remotely exploitable, no login, no user action

This month

CRITICAL 9.1REMOTEUPGRADE

CVE-2026-27812 is a critical-severity flaw (CVSS 9.1) affecting sub2api. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Sub2API is an AI API gateway platform designed to distribute and manage API quotas from AI product subscriptions. A vulnerability in versions prior to 0.1.85 is a Password Reset Poisoning (Host Header / Forwarded Header trust issue), which allows attackers to manipulate the password reset link. Attackers can exploit this flaw to inject their own domain into the password reset link, leading to the potential for account takeover. The vulnerability

Why this priority

Critical severity
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	9.1 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.3% (top 79%)
CISA exploited list	No
Weakness	CWE-116
Published	2026-02-26
Last modified	2026-06-17

Publisher (CNA): GitHub, Inc. · Vendor: sub2api

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-02-26 00:16 UTCPublished CVE record published
2026-06-17 10:27 UTCUpdated Record last modified

sub2api sub2api UPGRADE

Affected: < 0.1.85

Fixed in: 0.1.85

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy sub2api || rpm -q sub2api || sub2api --version

2. UPGRADE to 0.1.85 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade sub2api

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade sub2api

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-27812?

sub2api: upgrade to 0.1.85. Exact commands for each OS are on this page.

Is CVE-2026-27812 being exploited?

CVE-2026-27812 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-27812 affect?

CVE-2026-27812 affects sub2api. Severity is critical (CVSS 9.1). Sub2API is an AI API gateway platform designed to distribute and manage API quotas from AI product subscriptions. A vulnerability in versions prior to 0.1.85 is a Password Reset Poisoning (Host Header / Forwarded Header trust issue), which

How urgent is CVE-2026-27812?

Priority 42/100. Critical severity; Remotely exploitable, no login, no user action

References

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