PatchTheCVECVE-2020-26236: In ScratchVerifier before commit a603769, an attacker can hijack the verification process to log into someone
CVE-2020-26236 is a high-severity flaw (CVSS 7.5) affecting scratchverifier. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
In ScratchVerifier before commit a603769, an attacker can hijack the verification process to log into someone else's account on any site that uses ScratchVerifier for logins. A possible exploitation would follow these steps: 1. User starts login process. 2. Attacker attempts login for user, and is given the same verification code. 3. User comments code as part of their normal login. 4. Before user can, attacker completes the login process now tha
Why this priority
- High severity
A fixed release or distro patch exists.
Risk facts
| CVSS score | 7.5 (High) |
| Attack vector | Network (remote) |
| Attack complexity | High |
| Privileges needed | None |
| User interaction | Required |
| EPSS exploit chance | 0.9% (top 39%) |
| CISA exploited list | No |
| Weakness | CWE-287 |
| Published | 2020-11-20 |
| Last modified | 2026-06-17 |
Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
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-2020-26236?
scratchverifier: upgrade to a603769. Exact commands for each OS are on this page.
Is CVE-2020-26236 being exploited?
CVE-2020-26236 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-2020-26236 affect?
CVE-2020-26236 affects scratchverifier. Severity is high (CVSS 7.5). In ScratchVerifier before commit a603769, an attacker can hijack the verification process to log into someone else's account on any site that uses ScratchVerifier for logins. A possible exploitation would follow these steps: 1. User starts
How urgent is CVE-2020-26236?
Priority 42/100. High severity