CVE-2017-17972: packages/subjects/pub/subjects.php in Archon 3.21 rev-1 has XSS in the referer parameter in an index.php?subje

Routine

MEDIUM 6.1DOWNGRADE

CVE-2017-17972 is a medium-severity flaw (CVSS 6.1) affecting archon. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

packages/subjects/pub/subjects.php in Archon 3.21 rev-1 has XSS in the referer parameter in an index.php?subjecttypeid=xxx request, aka Open Bug Bounty ID OBB-466362.

Why this priority

No elevated risk signals yet

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

Risk facts

CVSS score	6.1 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.8% (top 43%)
CISA exploited list	No
Weakness	CWE-79
Published	2019-07-03
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: archon project

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

Am I affected?

Timeline

2019-07-03 17:15 UTCPublished CVE record published
2026-06-17 01:11 UTCUpdated Record last modified

archon project archon DOWNGRADE

Affected: 3.21 rev-1

Fixed in: no fixed release known

Safe to downgrade to: a release before 3.21

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 3.21 (Debian / Ubuntu)

apt-cache madison archon sudo apt install archon=<VERSION_BEFORE_3.21> sudo apt-mark hold archon

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

dnf --showduplicates list archon sudo dnf downgrade archon-<VERSION_BEFORE_3.21> sudo dnf versionlock add archon

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-2017-17972?

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

Is CVE-2017-17972 being exploited?

CVE-2017-17972 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-2017-17972 affect?

CVE-2017-17972 affects archon. Severity is medium (CVSS 6.1). packages/subjects/pub/subjects.php in Archon 3.21 rev-1 has XSS in the referer parameter in an index.php?subjecttypeid=xxx request, aka Open Bug Bounty ID OBB-466362.

How urgent is CVE-2017-17972?

Priority 36/100. No elevated risk signals yet.

Software pages

PHP vulnerabilities

Related CVEs

CVE-2017-17911 MEDIUM 6.1 DOWNGRADE packages/core/contact.php in Archon 3.21 rev-1 has XSS in the referer parameter in an index.php?p=core/contact

References

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