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CriticalA PHP security release fixes two CVSS 9.2 flaws, and PHP 8.1 and older get no patchWhat it means for your site

Snippets security vulnerabilities

mySites.guru tracks 3 vulnerabilities in Snippets (com_snippets), covering 4 CVEs. Every connected Joomla site is checked against them on each audit.

Is my site affected?

Your site is affected if it runs Snippets in any of these ranges:

  • from 10.0.0 up to but not including 11.0.0
  • up to and including 9.3.10
  • from 1.0.0 up to but not including 7.0.0
Latest safe version
11.0.0 or later. No rule we check matches that release or any newer one.
What to do
Update Snippets to 11.0.0 or later from the vendor, then confirm the installed version on the Joomla administrator's Extensions: Manage screen.
Check whether your sites are affected

Every Snippets vulnerability we track

Newest first. CVSS is the score published in each CVE record, where it has one; the severity column is the rating our check uses.

CVEAffected versionsFixed inSeverityAdded
CVE-2026-88852CVSS 7.5from 10.0.0 up to but not including 11.0.011.0.0High2026-09-13
CVE-2026-88852CVSS 7.5from 1.0.0 up to but not including 7.0.07.0.0High2026-09-13
CVE-2026-63684CVSS 8.8CVE-2026-64792CVSS 7.5CVE-2026-63265CVSS 8.0up to and including 9.3.10after 9.3.10Medium2026-07-22

What we check for

HighCVE-2026-888522026-09-13

Snippets (snippets) 10.0.0 to below 11.0.0 - Authenticated Stored XSS via Snippet Variable Overrides

Regular Labs Snippets 10.0.0 through 10.0.6 is affected by CVE-2026-88852, fixed in 11.0.0 (released 13 September 2026). Snippet variable overrides could be set by any user able to author content, letting a lower-privileged author change the values a snippet renders and inject script through them. 11.0.0 restricts variable overrides to selected article author groups by default. Exploitation requires the ability to author or edit content containing Snippets tags, so this is an authenticated stored XSS. Update to 11.0.0 or later. Note that 11.0.0 is flagged by the vendor as a BC BREAK: the restriction is enabled by default and has to be re-opened deliberately per author group, so any site relying on variable overrides should review those settings after updating. The CVE record was published on 14 September 2026 with a CVSS 4.0 base score of 7.5 (High), vector CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N/S:N/AU:N.

Affected versions: ≥ 10.0.0 and < 11.0.0

Full advisory: regularlabs.com

HighCVE-2026-888522026-09-13

Snippets (snippets) 1.0.0 to below 7.0.0 - Authenticated Stored XSS via Snippet Variable Overrides

Regular Labs Snippets 1.0.0 through 6.9.4 is affected by CVE-2026-88852. Snippet variable overrides could be set by any user able to author content, letting a lower-privileged author change the values a snippet renders and inject script through them. The Free edition stopped being affected at 7.0.0; the Pro edition remained affected through 10.0.6 and was fixed in 11.0.0 (released 13 September 2026), which is covered by a separate rule. Exploitation requires the ability to author or edit content containing Snippets tags, so this is an authenticated stored XSS. Update to 11.0.0 or later, the current release for both editions, and note that 11.0.0 is flagged by the vendor as a BC BREAK: variable overrides are restricted to selected article author groups by default and have to be re-opened deliberately, so any site relying on them should review those settings after updating. The CVE record was published on 14 September 2026 with a CVSS 4.0 base score of 7.5 (High), vector CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N/S:N/AU:N.

Affected versions: ≥ 1.0.0 and < 7.0.0

Full advisory: regularlabs.com

MediumCVE-2026-63684CVE-2026-64792CVE-2026-632652026-07-22

Regular Labs Snippets (com_snippets) <= 9.3.10 - Broken Access Control and Search Index Content Disclosure

Regular Labs Snippets up to and including 9.3.10. Administrator actions, editor popups and import/export requests lacked consistent token, item-permission and input-validation checks, so unauthorised backend users or a CSRF attack could expose, create or modify extension configuration and items (CVE-2026-63684). Smart Search indexing could also store restricted content in the public search index (CVE-2026-64792), and the shared Regular Labs AJAX endpoints lacked consistent CSRF and permission checks (CVE-2026-63265). Fixed in the Regular Labs security release of 22 July 2026 (10.0.0). Note this rule matches the com_snippets component deliberately: the plugin element "snippets" is also used by the unrelated "Page Builder CK - Snippets" plugin.

Affected versions: ≤ 9.3.10

Full advisory: our disclosure post

Timeline

  1. 22 July 2026Check added for CVE-2026-63684, CVE-2026-64792 and CVE-2026-63265 (up to and including 9.3.10)
  2. 22 July 2026CVE-2026-63684 record published
  3. 22 July 2026CVE-2026-64792 record published
  4. 22 July 2026CVE-2026-63265 record published
  5. 13 September 2026Check added for CVE-2026-88852 (from 10.0.0 up to but not including 11.0.0)
  6. 13 September 2026Check added for CVE-2026-88852 (from 1.0.0 up to but not including 7.0.0)
  7. 14 September 2026CVE-2026-88852 record published

References

Each CVE page above links its official cve.org record and its NVD entry.

Snippets vulnerability questions

Which versions of Snippets are vulnerable?
mySites.guru tracks 3 vulnerabilities in Snippets (com_snippets). A site is affected if its installed version is in any of these ranges: from 10.0.0 up to but not including 11.0.0; up to and including 9.3.10; from 1.0.0 up to but not including 7.0.0.
What is the latest safe version of Snippets?
11.0.0. Every vulnerability tracked here is fixed by 11.0.0, and no rule we check matches that release or any later one.
How do I check which version of Snippets my Joomla site runs?
The installed version is listed on the Joomla administrator's Extensions: Manage screen; search it for com_snippets. mySites.guru reads the installed version on every audit of a connected site and checks it against these rules.

Running Snippets on a site you manage?

A free audit tells you which of your Joomla and WordPress sites run an affected version, which are out of date, and which have not been backed up. No card required. If a site is already compromised, fix.mysites.guru is a single fixed fee per incident, usually resolved the same day.

This check is part of the mySites.guru Joomla vulnerability scanner, which reads every installed extension's version on each audit. Browse the rest of the Joomla vulnerability database.

CVE identifiers: CVE-2026-88852, CVE-2026-63684, CVE-2026-64792, CVE-2026-63265. Rules current as of 23 October 2026.