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CVE-2020-5205

Session fixation attack in Pow (Hex package)

MEDIUM
5.4
CVSS Score
Published: January 9, 2020 at 02:05 AM UTC
Updated: June 17, 2026 at 03:21 AM UTC
2 products affected across 2 vendorsPowPow

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Severity
MEDIUM5.4
Exploit prediction
EPSS 0.8%

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Pow· Powauth
95%
v < 1.0.16
Affected range stops below 1.0.16, so it looks safe — our inference, not a vendor statement
Pow· Danschultzer
60%
v < 1.0.16
Affected range stops below 1.0.16, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (3)

x_refsource_MISCThird Party Advisory
Source: [email protected]
https://github.com/danschultzer/pow/blob/master/CHANGELOG.md#v1016-2020-01-07
x_refsource_MISCPatchThird Party Advisory
Source: [email protected]
https://github.com/danschultzer/pow/commit/578ffd3d8bb8e8a26077b644222186b108da474f
x_refsource_CONFIRMThird Party Advisory
Source: [email protected]
https://github.com/danschultzer/pow/security/advisories/GHSA-v2wf-c3j6-wpvw

CVSS

5.4MEDIUM[email protected]
Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
LOW
Integrity
LOW
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-384

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