CVE-2020-10474: Reflected XSS in admin/manage-comments.php in Chadha PHPKB Standard Multi-Language 9 allows attackers to injec

Routine

MEDIUM 4.8DOWNGRADE

CVE-2020-10474 is a medium-severity flaw (CVSS 4.8) affecting phpkb. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Reflected XSS in admin/manage-comments.php in Chadha PHPKB Standard Multi-Language 9 allows attackers to inject arbitrary web script or HTML via the GET parameter sort.

Why this priority

Public exploit reference

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	4.8 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	High
User interaction	Required
EPSS exploit chance	0.6% (top 51%)
CISA exploited list	No
Weakness	CWE-79
Published	2020-03-12
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: chadhaajay

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

Am I affected?

Timeline

2020-03-12 14:15 UTCPublished CVE record published
2026-06-17 02:47 UTCUpdated Record last modified

chadhaajay phpkb DOWNGRADE

Affected: 9.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 9.0

1. Check installed version

apt-cache policy phpkb || rpm -q phpkb || phpkb --version

2. No fixed release: DOWNGRADE to a release before 9.0 (Debian / Ubuntu)

apt-cache madison phpkb sudo apt install phpkb=<VERSION_BEFORE_9.0> sudo apt-mark hold phpkb

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list phpkb sudo dnf downgrade phpkb-<VERSION_BEFORE_9.0> sudo dnf versionlock add phpkb

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

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-2020-10474?

phpkb: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2020-10474 being exploited?

CVE-2020-10474 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-2020-10474 affect?

CVE-2020-10474 affects phpkb. Severity is medium (CVSS 4.8). Reflected XSS in admin/manage-comments.php in Chadha PHPKB Standard Multi-Language 9 allows attackers to inject arbitrary web script or HTML via the GET parameter sort.

How urgent is CVE-2020-10474?

Priority 34/100. Public exploit reference

Software pages

PHP vulnerabilities

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CVE-2020-10502 MEDIUM 4.3 DOWNGRADE CSRF in admin/manage-comments.php in Chadha PHPKB Standard Multi-Language 9 allows attackers to approve any co
CVE-2020-10501 MEDIUM 6.5 DOWNGRADE CSRF in admin/manage-departments.php in Chadha PHPKB Standard Multi-Language 9 allows attackers to edit a depa

References

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