# CVE-2021-27654: Auth bypass in Pega Infinity

> Attackers can bypass local authentication checks via the forgotten password reset functionality to take over accounts in Pega Infinity.

- **Severity:** High 8.8 (`CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:H/RL:O/RC:C`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 28 Jan 2022
- **Updated:** 3 Aug 2024
- **Also known as:** GHSA-pf5r-8q35-xv4w

## What is CVE-2021-27654?

CVE-2021-27654 is a high-severity authentication bypass vulnerability in Pegasystems Pega Infinity, published on 28 Jan 2022. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

### Official description

Forgotten password reset functionality for local accounts can be used to bypass local authentication checks.

Weakness: CWE-640 (Weak Password Recovery Mechanism for Forgotten Password)

## Which versions are affected by CVE-2021-27654?

It affects 1 product.


Products: Pega Infinity.

## How do I fix CVE-2021-27654?

No fix has been published for CVE-2021-27654 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-27654 being exploited?

There is no known exploitation of CVE-2021-27654 in the wild and no public exploit code.

## Other vulnerabilities in Pegasystems Pega Infinity

- [CVE-2022-24083](https://insights.sbomify.com/CVE-2022-24083/): Auth bypass in Pega Infinity (critical 9.8)
- [CVE-2022-24082](https://insights.sbomify.com/CVE-2022-24082/): Deserialization in Pega Infinity (critical 9.8)
- [CVE-2021-27651](https://insights.sbomify.com/CVE-2021-27651/): Auth bypass in Pega Infinity (critical 9.8)
- [CVE-2024-10094](https://insights.sbomify.com/CVE-2024-10094/): Code injection in Pega Infinity (critical 9.1)
- [CVE-2021-27653](https://insights.sbomify.com/CVE-2021-27653/): Misconfiguration in Pega Infinity (medium 6.6)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-27654 and fix it if it is affected.

What it is: CVE-2021-27654 is a high-severity authentication bypass vulnerability in Pegasystems Pega Infinity, published on 28 Jan 2022. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2021-27654 in the wild and no public exploit code.

Affected product: Pegasystems Pega Infinity. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2021-27654/ (Markdown: https://insights.sbomify.com/CVE-2021-27654/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-27654
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-27654
- OSV: https://osv.dev/vulnerability/CVE-2021-27654

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-27654/
Summaries are generated and may contain mistakes; the official description above is the record.