CVE-2008-6547

FormEncode Access Restrictions Bypass

7.5 HighFix available

schema.py in FormEncode for Python (python-formencode) 1.0 does not apply the chained_validators feature, which allows attackers to bypass intended access restrictions via unknown vectors.

Exploit likelihood

1.49%Up 0.3 points since Feb 4, 2022

What each source reports

NVD Score used7.5

schema.py in FormEncode for Python (python-formencode) 1.0 does not apply the chained_validators feature, which allows attackers to bypass intended access restrictions via unknown vectors.

Record: CVE-2008-6547
CVSS 2.0: 7.5 HighAV:N/AC:L/Au:N/C:P/I:P/A:P
Weakness: CWE-20
Updated: 2026-11-02

CVE ListNo score

schema.py in FormEncode for Python (python-formencode) 1.0 does not apply the chained_validators feature, which allows attackers to bypass intended access restrictions via unknown vectors.

Record: CVE-2008-6547
Updated: 2026-11-02

EUVDEUVD-2009-0005No score

schema.py in FormEncode for Python (python-formencode) 1.0 does not apply the chained_validators feature, which allows attackers to bypass intended access restrictions via unknown vectors.

Record: EUVD-2009-0005
Updated: 2026-11-03

GitHub AdvisoriesGHSA-9jp4-68vc-r8wq8.7

FormEncode Access Restrictions Bypass

schema.py in FormEncode for Python (python-formencode) 1.0 does not apply the chained_validators feature, which allows attackers to bypass intended access restrictions via unknown vectors.

Record: GHSA-9jp4-68vc-r8wq
CVSS 4.0: 8.7 HighCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Weakness: CWE-20
Updated: 2026-11-02

OSVGHSA-9jp4-68vc-r8wq8.7

FormEncode Access Restrictions Bypass

schema.py in FormEncode for Python (python-formencode) 1.0 does not apply the chained_validators feature, which allows attackers to bypass intended access restrictions via unknown vectors.

Record: GHSA-9jp4-68vc-r8wq
CVSS 4.0: 8.7 HighCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Weakness: CWE-20
Updated: 2026-11-02

OSVNo score

schema.py in FormEncode for Python (python-formencode) 1.0 does not apply the chained_validators feature, which allows attackers to bypass intended access restrictions via unknown vectors.

Record: CVE-2008-6547
Updated: 2026-11-02

OSVDEBIAN-CVE-2008-6547No score

schema.py in FormEncode for Python (python-formencode) 1.0 does not apply the chained_validators feature, which allows attackers to bypass intended access restrictions via unknown vectors.

Record: DEBIAN-CVE-2008-6547
Updated: 2026-11-02

OSVPYSEC-2009-5No score

schema.py in FormEncode for Python (python-formencode) 1.0 does not apply the chained_validators feature, which allows attackers to bypass intended access restrictions via unknown vectors.

Record: PYSEC-2009-5
Updated: 2026-11-02

Affected products

formencode

Affected packages

Affected packages
Package	Affected	Fixed
`formencode` PyPI	1.0 to 1.0	1.0.1
`python-formencode` Debian:12	before 1.0.1-1	1.0.1-1
`python-formencode` Debian:13	before 1.0.1-1	1.0.1-1
`python-formencode` Debian:14	before 1.0.1-1	1.0.1-1
`formencode` PyPI	1.0 up to 1.0.1	1.0.1
`formencode` PyPI	before 1.0.1, plus listed versions 0.20.2.10.2.20.30.4 Show 7 moreShow less 0.50.5.10.60.70.7.10.91.0	1.0.1

History

History
Recorded	Changed	Sources
Nov 10, 2026	facts
Nov 3, 2026	aliases	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2008-6547 is a high vulnerability (CVSS 7.5) in Formencode, published March 30, 2009. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.49%, the 74th percentile. Fixed in formencode 1.0.1.

References

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