CVE-2026-4816: A Reflected Cross Site Scripting (XSS) vulnerability has been found in Support Board v3.7.7

Q: How do I fix CVE-2026-4816?

support board: upgrade to 3.7.8. Exact commands for each OS are on this page.

Q: Is CVE-2026-4816 being exploited?

CVE-2026-4816 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-4816 affect?

CVE-2026-4816 affects support board. Severity is medium (CVSS 5.4). A Reflected Cross Site Scripting (XSS) vulnerability has been found in Support Board v3.7.7. This vulnerability allows an attacker to execute JavaScript code in the victim's browser by sending the victim a malicious URL using the 'search' p

Q: How urgent is CVE-2026-4816?

Priority 20/100. No elevated risk signals yet.

Routine

MEDIUM 5.4UPGRADE

CVE-2026-4816 is a medium-severity flaw (CVSS 5.4) affecting support board. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A Reflected Cross Site Scripting (XSS) vulnerability has been found in Support Board v3.7.7. This vulnerability allows an attacker to execute JavaScript code in the victim's browser by sending the victim a malicious URL using the 'search' parameter in '/supportboard/include/articles.php'. This vulnerability can be exploited to steal sensitive user data, such as session cookies, or to perform actions on behalf of the user.

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	5.4 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	Required
EPSS exploit chance	0.1% (top 96%)
CISA exploited list	No
Weakness	CWE-79
Published	2026-03-25
Last modified	2026-06-17

Publisher (CNA): Spanish National Cybersecurity Institute, S.A. (INCIBE) · Vendor: schiocco

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-03-25 14:16 UTCPublished CVE record published
2026-06-17 10:57 UTCUpdated Record last modified

schiocco support board UPGRADE

Affected: < 3.7.8

Fixed in: 3.7.8

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy support-board || rpm -q support-board || support-board --version

2. UPGRADE to 3.7.8 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade support-board

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade support-board

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-4816?

support board: upgrade to 3.7.8. Exact commands for each OS are on this page.

Is CVE-2026-4816 being exploited?

CVE-2026-4816 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-4816 affect?

CVE-2026-4816 affects support board. Severity is medium (CVSS 5.4). A Reflected Cross Site Scripting (XSS) vulnerability has been found in Support Board v3.7.7. This vulnerability allows an attacker to execute JavaScript code in the victim's browser by sending the victim a malicious URL using the 'search' p

How urgent is CVE-2026-4816?

Priority 20/100. No elevated risk signals yet.

Software pages

PHP vulnerabilities

Related CVEs

CVE-2026-4815 HIGH 8.8 UPGRADE A SQL Injection vulnerability has been found in Support Board v3.7.7

References

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