CVE-2005-2149: config.php in Cacti 0.8.6e and earlier allows remote attackers to set the no_http_headers switch, then modify

This week

HIGH 10.0WATCHLISTDOWNGRADE

CVE-2005-2149 is a high-severity flaw (CVSS 10.0) affecting cacti. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

config.php in Cacti 0.8.6e and earlier allows remote attackers to set the no_http_headers switch, then modify session information to gain privileges and disable the use of addslashes to conduct SQL injection attacks.

Why this priority

Critical severity
On your watchlist

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

Risk facts

CVSS score	10.0 (High)
EPSS exploit chance	2.3% (top 17%)
CISA exploited list	No
Published	2005-07-06
Last modified	2026-06-16

Publisher (CNA): Debian GNU/Linux · Vendor: the cacti group

Last updated 2026-06-16 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2005-07-06 04:00 UTCPublished CVE record published
2026-06-16 22:14 UTCUpdated Record last modified

the cacti group cacti DOWNGRADE

Affected: 0.8 · 0.8.1 · 0.8.2 · 0.8.2a · 0.8.3 · 0.8.3a · 0.8.4 · 0.8.5

Fixed in: no fixed release known

Safe to downgrade to: a release before 0.8

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 0.8 (Debian / Ubuntu)

apt-cache madison cacti sudo apt install cacti=<VERSION_BEFORE_0.8> sudo apt-mark hold cacti

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

dnf --showduplicates list cacti sudo dnf downgrade cacti-<VERSION_BEFORE_0.8> sudo dnf versionlock add cacti

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-2005-2149?

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

Is CVE-2005-2149 being exploited?

CVE-2005-2149 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-2005-2149 affect?

CVE-2005-2149 affects cacti. Severity is high (CVSS 10.0). config.php in Cacti 0.8.6e and earlier allows remote attackers to set the no_http_headers switch, then modify session information to gain privileges and disable the use of addslashes to conduct SQL injection attacks.

How urgent is CVE-2005-2149?

Priority 61/100. Critical severity; On your watchlist

Software pages

PHP vulnerabilities

Related CVEs

CVE-2025-66399 HIGH 8.8 UPGRADE Cacti is an open source performance and fault management framework
CVE-2005-10004 HIGH 8.8 UPGRADE Cacti versions prior to 0.8.6-d contain a remote command execution vulnerability in the graph_view.php script
CVE-2026-40083 HIGH 7.2 UPGRADE Cacti is an open source performance and fault management framework
CVE-2026-40080 MEDIUM 6.1 UPGRADE Cacti is an open source performance and fault management framework
CVE-2026-40082 MEDIUM 5.4 UPGRADE Cacti is an open source performance and fault management framework

References

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