CVE-2020-5205
CVE-2020-5205 is a medium-severity vulnerability in Powauth Pow with a CVSS 3.x base score of 6.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-384.
Key facts
- Severity: Medium (CVSS 3.x base score 6.5)
- CVSS v2: 5.5
- EPSS exploit prediction: 1% (51st percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-384
- Affected product: Powauth Pow
- Published:
- Last modified:
Description
In Pow (Hex package) before 1.0.16, the use of Plug.Session in Pow.Plug.Session is susceptible to session fixation attacks if a persistent session store is used for Plug.Session, such as Redis or a database. Cookie store, which is used in most Phoenix apps, doesn't have this vulnerability.
Frequently asked questions
- What is CVE-2020-5205?
- In Pow (Hex package) before 1.0.16, the use of Plug.Session in Pow.Plug.Session is susceptible to session fixation attacks if a persistent session store is used for Plug.Session, such as Redis or a database. Cookie store, which is used in most Phoenix apps, doesn't have this vulnerability.
- How severe is CVE-2020-5205?
- CVE-2020-5205 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with high attack complexity, requires low privileges and user interaction. Impact on confidentiality is high, integrity low, and availability none.
- Is CVE-2020-5205 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (51st percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2020-5205?
- CVE-2020-5205 affects Powauth Pow. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2020-5205?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- When was CVE-2020-5205 published?
- CVE-2020-5205 was published on 2020-01-09 and last updated on 2026-06-17.
References
- https://github.com/danschultzer/pow/blob/master/CHANGELOG.md#v1016-2020-01-07
- https://github.com/danschultzer/pow/commit/578ffd3d8bb8e8a26077b644222186b108da474f
- https://github.com/danschultzer/pow/security/advisories/GHSA-v2wf-c3j6-wpvw
Affected products (1)
- cpe:2.3:a:powauth:pow:*:*:*:*:*:*:*:*
More vulnerabilities in Powauth Pow
- CVE-2023-42446 — Medium (CVSS 6.5): Pow is a authentication and user management solution for Phoenix and Plug-based apps. Starting in version 1.0.14 and…
All CVEs affecting Powauth Pow →
Other CWE-384 (Session Fixation) vulnerabilities
- CVE-2024-11317 — Critical (CVSS 10.0): Session Fixation vulnerabilities allow an attacker to fix a users session identifier before login providing an…
- CVE-2024-38513 — Critical (CVSS 10.0): Fiber is an Express-inspired web framework written in Go A vulnerability present in versions prior to 2.52.5 is a…
- CVE-2021-20151 — Critical (CVSS 10.0): Trendnet AC2600 TEW-827DRU version 2.08B01 contains a flaw in the session management for the device. The router's…
- CVE-2025-67446 — Critical (CVSS 9.8): Improper Authentication (Authentication Bypass) exists in Neterbit NW-431F Router 20241014-IR03 and before. The router…
- CVE-2026-25101 — Critical (CVSS 9.8): Bludit allows user's session identifier to be set before authentication. The value of this session ID stays the same…
- CVE-2026-24352 — Critical (CVSS 9.8): PluXml CMS allows a user's session identifier to be set before authentication. The value of this session ID stays the…