CVE-2020-23178

mediumpriority · track · 22OT risk · elevatedEPSS 0.005 · 44 %ileEURUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

0.52% (44th) EPSS

CVSS 5.5 · medium

Is it mine?

3 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · fstec_bdu · nvd

EPSS · scored 2026-10-27

An issue exists in PHP-Fusion 9.03.50 where session cookies are not deleted once a user logs out, allowing for an attacker to perform a session replay attack and impersonate the victim user.

cvss

Technical severity, 0–10. One row per scoring source.

5.5

010

base score 0–10 · higher = more severe · hover a vector to decode

v2.05.5mediumAV:N/AC:L/Au:S/C:P/I:P/A:Nprimary · NVD / NIST USexploitability 8 · impact 4.9

v3.15.4mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:Nprimary · NVD / NIST USexploitability 2.8 · impact 2.5

v3.15.4mediumAV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:Nsecondary · FSTEC (BDU) RU

v3.15mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-294USprimaryCWE-294US

affected products (3)

Products and version ranges known to be affected.

n/a n/a≤ n/aenisa_euvdEU
PHP-Fusion PHP-Fusion≤ 9.03.50fstec_bduRU
php-fusion php-fusion= 9.03.50nvdUScpe:2.3:a:php-fusion:php-fusion:*:*:*:*:*:*:*:*

also known as (4)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu nvd NVD CVE.org MITRE

published 2021-07-02modified 2026-06-17

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+336 more

references (5)

External citations — patches, advisories, analysis.

https://github.com/PHPFusion/PHPFusion/issues/2314 cnnvd
https://nvd.nist.gov/vuln/detail/CVE-2020-23178 cnnvd
https://www.php-fusion.co.uk/phpfusion_9_downloads.phpPatchcnnvd
https://github.com/PHPFusion/PHPFusion/issues/2314 enisa_euvd
https://github.com/PHPFusion/PHPFusion/issues/2314ExploitIssue TrackingThird Party Advisorynvd

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