CVE-2017-17672

highpriority · attend · 54EPSS 0.152 · 97 %ileexploit · PoCEUUS

grimoire priorityP1 · Urgent

Exploitable?

Public exploit

1 exploit · PoC

Likely / severe?

15.2% (97th) EPSS

CVSS 7.5 · high

Is it mine?

3 products

Check your exposure

Who says so?

3 sources

cnnvd · enisa_euvd · nvd

EPSS · scored 2026-10-27

In vBulletin through 5.3.x, there is an unauthenticated deserialization vulnerability that leads to arbitrary file deletion and, under certain circumstances, code execution, because of unsafe usage of PHP's unserialize() in vB_Library_Template's cacheTemplates() function, which is a publicly exposed API. This is exploited with the templateidlist parameter to ajax/api/template/cacheTemplates.

cvss

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

9.8

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · high–critical · 7.5–9.8

v2.07.5highAV:N/AC:L/Au:N/C:P/I:P/A:Pprimary · NVD / NIST USexploitability 10 · impact 6.4

v3.09.8criticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 3.9 · impact 5.9

v3.09.3criticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:Psecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-502USprimary

exploits (1)

Public proof-of-concept and weaponised exploit code.

EDB-43362vBulletin 5.x - 'cacheTemplates' Remote Arbitrary File DeletionPoC · exploit_db

affected products (3)

Products and version ranges known to be affected.

n/a n/a≤ n/aenisa_euvdEU
vbulletin vbulletin= 5.0.0nvdUScpe:2.3:a:vbulletin:vbulletin:*:*:*:*:*:*:*:*
vbulletin vbulletin5.0.1 → 5.3.3nvdUScpe:2.3:a:vbulletin:vbulletin:*:*:*:*:*:*:*:*

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd nvd NVD CVE.org MITRE

published 2017-12-14modified 2026-06-17

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+3741 more

references (5)

External citations — patches, advisories, analysis.

https://blogs.securiteam.com/index.php/archives/3573 cnnvd
https://blogs.securiteam.com/index.php/archives/3573 enisa_euvd
https://www.exploit-db.com/exploits/43362/enisa_euvd
https://blogs.securiteam.com/index.php/archives/3573ExploitThird Party Advisorynvd
https://www.exploit-db.com/exploits/43362/ExploitThird Party AdvisoryVDB Entrynvd

scry

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