CVE-2008-6490: function/update_xml.php in FLABER 1.1 and earlier allows remote attackers to overwrite arbitrary files by spec

Q: How do I fix CVE-2008-6490?

flaber: upgrade to newer than 1.1. Exact commands for each OS are on this page.

Q: Is CVE-2008-6490 being exploited?

CVE-2008-6490 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-2008-6490 affect?

CVE-2008-6490 affects flaber. Severity is high (CVSS 7.5). function/update_xml.php in FLABER 1.1 and earlier allows remote attackers to overwrite arbitrary files by specifying the target filename in the target_file parameter. NOTE: this can be leveraged for code execution by overwriting a PHP file

Q: How urgent is CVE-2008-6490?

Priority 54/100. High severity; EPSS top 9%: very likely to be exploited; Public exploit reference

This month

HIGH 7.5UPGRADE

CVE-2008-6490 is a high-severity flaw (CVSS 7.5) affecting flaber. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

function/update_xml.php in FLABER 1.1 and earlier allows remote attackers to overwrite arbitrary files by specifying the target filename in the target_file parameter. NOTE: this can be leveraged for code execution by overwriting a PHP file, as demonstrated using function/upload_file.php.

Why this priority

High severity
EPSS top 9%: very likely to be exploited
Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	7.5 (High)
EPSS exploit chance	4.2% (top 9%)
CISA exploited list	No
Weakness	CWE-20
Published	2009-03-19
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: flysforum

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

Am I affected?

Timeline

2009-03-19 10:30 UTCPublished CVE record published
2026-06-16 23:02 UTCUpdated Record last modified

flysforum flaber UPGRADE

Affected: <= 1.1

Fixed in: newer than 1.1

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to newer than 1.1 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade flaber

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade flaber

Note

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

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

Exploit-DB: FLABER 1.1 RC1 - Remote Command Execution

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-2008-6490?

flaber: upgrade to newer than 1.1. Exact commands for each OS are on this page.

Is CVE-2008-6490 being exploited?

CVE-2008-6490 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-2008-6490 affect?

CVE-2008-6490 affects flaber. Severity is high (CVSS 7.5). function/update_xml.php in FLABER 1.1 and earlier allows remote attackers to overwrite arbitrary files by specifying the target filename in the target_file parameter. NOTE: this can be leveraged for code execution by overwriting a PHP file

How urgent is CVE-2008-6490?

Priority 54/100. High severity; EPSS top 9%: very likely to be exploited; Public exploit reference

Software pages

PHP vulnerabilities

References

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