ZeusQA
Start free

Vulnerability record

CVE-2026-127088

highCVSS 4.0 8.6EPSS 0.54%Published · Bubka

The short answer

CVE-2026-127088 affects Bubka 2FAuth and is rated high (CVSS 8.6). It is not in CISA's KEV catalog; EPSS puts the chance of exploitation in the next 30 days at 0.54%.

What it is

2FAuth before 9.0.1 contains a weak password recovery vulnerability that allows unauthenticated attackers to poison reset links by forging the HTTP Host header. Attackers can request password or WebAuthn recovery emails with an attacker-controlled host, capture the victim's token, and take over accounts exposing stored TOTP/HOTP secrets.

Weakness: CWE-640.

Severity

8.6 high

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/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

Exploited (CISA KEV)

Not listed

CISA lists confirmed exploitation only

EPSS, next 30 days

0.54%

Higher than 46% of scored CVEs

How it can be exploited

Attack vector
Network
Attack complexity
Low
Attack requirements
None
Privileges required
None
User interaction
Passive
Confidentiality impact
High
Integrity impact
High
Availability impact
None

Affected products

2FAuth. NVD's record lists the exact affected versions.

References

Questions

Is CVE-2026-127088 being exploited?

It is not in CISA's Known Exploited Vulnerabilities catalog as of 2026-11-13. FIRST's EPSS estimates a 0.54% chance of exploitation in the next 30 days.

How do I fix CVE-2026-127088?

Follow the vendor advisory in the references below. NVD lists the affected versions under its configurations.

From NVD, CISA KEV, FIRST EPSS and OSV.dev, checked . Status on NVD: Awaiting Analysis. The description is NVD's text, quoted as published.

Related

Know the day a CVE lands in your code

Connect a GitHub repository and ZeusQA checks its dependencies daily, briefs each advisory and opens the fix. Three test runs free, no card.

Start freeSee how a run works