CVE-2020-15018Public exploitNetwork attack vector

Account takeover via reused session identifiers

Published Jun 24, 2020 · Updated Aug 4, 2024

Session fixation in playSMS 1.4.3 and earlier allows remote attackers to take control of user accounts through a reused PHPSESSID cookie. The login flow retains the same PHPSESSID value before and after authentication instead of regenerating the session identifier. Exploitation requires an attacker to fix a known session in a victim's browser and the victim to authenticate, after which the attacker can act with that account's privileges.

CVSS severity6.5
Medium
EPSS probability0.90%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Session fixation in playSMS 1.4.3 and earlier allows remote attackers to take control of user accounts through a reused PHPSESSID cookie. The login flow retains the same PHPSESSID value before and after authentication instead of regenerating the session identifier. Exploitation requires an attacker to fix a known session in a victim's browser and the victim to authenticate, after which the attacker can act with that account's privileges.

The record

CVE
CVE-2020-15018
Published
Jun 24, 2020
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-384, CAPEC-61, T1550.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 24, 2020CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

6.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
6.4NIST NVDAV:N/AC:L/Au:N/C:P/I:P/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-384Session Fixation
CAPEC-61Session Fixation
T1550.004Use Alternate Authentication Material: Web Session Cookie

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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