CVE-2026-93709
Dancer2 versions before 2.2.0 for Perl serve a layout as a page when an equivalent spelling of its path misses the guard in the AutoPage handler
Dancer2 versions before 2.2.0 for Perl serve a layout as a page when an equivalent spelling of its path misses the guard in the AutoPage handler.
The handler compares the request path against the layout directory name as text, while the lookup that follows canonicalises it. A doubled slash, a dot segment, a percent-encoded slash, or a different capitalisation on a case-insensitive filesystem therefore misses the guard.
The handler is off by default, enabled with auto_page. The layout wrapping every page is already public, so this discloses one of the application's other layouts.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- Low
- Integrity
- None
- Availability
- None
Exploit likelihood
What each source reports
CVE List Score used
5.3
Dancer2 versions before 2.2.0 for Perl serve a layout as a page when an equivalent spelling of its path misses the guard in the AutoPage handler
Dancer2 versions before 2.2.0 for Perl serve a layout as a page when an equivalent spelling of its path misses the guard in the AutoPage handler.
The handler compares the request path against the layout directory name as text, while the lookup that follows canonicalises it. A doubled slash, a dot segment, a percent-encoded slash, or a different capitalisation on a case-insensitive filesystem therefore misses the guard.
The handler is off by default, enabled with auto_page. The layout wrapping every page is already public, so this discloses one of the application's other layouts.
- Record
CVE-2026-93709- CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N - Weakness
- CWE-41
- Updated
- 2026-11-02
EUVDEUVD-2026-84255
5.3
Dancer2 versions before 2.2.0 for Perl serve a layout as a page when an equivalent spelling of its path misses the guard in the AutoPage handler.
The handler compares the request path against the layout directory name as text, while the lookup that follows canonicalises it. A doubled slash, a dot segment, a percent-encoded slash, or a different capitalisation on a case-insensitive filesystem therefore misses the guard.
The handler is off by default, enabled with auto_page. The layout wrapping every page is already public, so this discloses one of the application's other layouts.
- Record
EUVD-2026-84255- CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-8fpv-59mj-6jfr
5.3
Dancer2 versions before 2.2.0 for Perl serve a layout as a page when an equivalent spelling of...
Dancer2 versions before 2.2.0 for Perl serve a layout as a page when an equivalent spelling of its path misses the guard in the AutoPage handler.
The handler compares the request path against the layout directory name as text, while the lookup that follows canonicalises it. A doubled slash, a dot segment, a percent-encoded slash, or a different capitalisation on a case-insensitive filesystem therefore misses the guard.
The handler is off by default, enabled with auto_page. The layout wrapping every page is already public, so this discloses one of the application's other layouts.
- Record
GHSA-8fpv-59mj-6jfr- CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N - Weakness
- CWE-41
- Updated
- 2026-11-02
NVD
5.3
Dancer2 versions before 2.2.0 for Perl serve a layout as a page when an equivalent spelling of its path misses the guard in the AutoPage handler.
The handler compares the request path against the layout directory name as text, while the lookup that follows canonicalises it. A doubled slash, a dot segment, a percent-encoded slash, or a different capitalisation on a case-insensitive filesystem therefore misses the guard.
The handler is off by default, enabled with auto_page. The layout wrapping every page is already public, so this discloses one of the application's other layouts.
- Record
CVE-2026-93709- CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N - Weakness
- CWE-41
- Updated
- 2026-11-02
OSV
5.3
Dancer2 versions before 2.2.0 for Perl serve a layout as a page when an equivalent spelling of its path misses the guard in the AutoPage handler
Dancer2 versions before 2.2.0 for Perl serve a layout as a page when an equivalent spelling of its path misses the guard in the AutoPage handler.
The handler compares the request path against the layout directory name as text, while the lookup that follows canonicalises it. A doubled slash, a dot segment, a percent-encoded slash, or a different capitalisation on a case-insensitive filesystem therefore misses the guard.
The handler is off by default, enabled with auto_page. The layout wrapping every page is already public, so this discloses one of the application's other layouts.
- Record
CVE-2026-93709- CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N - Weakness
- CWE-41
- Updated
- 2026-11-02
OSVDEBIAN-CVE-2026-93709
5.3
Dancer2 versions before 2.2.0 for Perl serve a layout as a page when an equivalent spelling of its path misses the guard in the AutoPage handler. The handler compares the request path against the layout directory name as text, while the lookup that follows canonicalises it. A doubled slash, a dot segment, a percent-encoded slash, or a different capitalisation on a case-insensitive filesystem therefore misses the guard. The handler is off by default, enabled with auto_page. The layout wrapping every page is already public, so this discloses one of the application's other layouts.
- Record
DEBIAN-CVE-2026-93709- CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N - Updated
- 2026-11-02
OSVUBUNTU-CVE-2026-93709
5.3
Dancer2 versions before 2.2.0 for Perl serve a layout as a page when an equivalent spelling of its path misses the guard in the AutoPage handler. The handler compares the request path against the layout directory name as text, while the lookup that follows canonicalises it. A doubled slash, a dot segment, a percent-encoded slash, or a different capitalisation on a case-insensitive filesystem therefore misses the guard. The handler is off by default, enabled with auto_page. The layout wrapping every page is already public, so this discloses one of the application's other layouts.
- Record
UBUNTU-CVE-2026-93709- CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N - Updated
- 2026-11-02
OSVopenSUSE-SU-2026:12202-1 No score
perl-Dancer2-2.2.2-1.1 on GA media
These are all security issues fixed in the perl-Dancer2-2.2.2-1.1 package on the GA media of openSUSE Tumbleweed.
- Record
openSUSE-SU-2026:12202-1- Updated
- 2026-11-02
Affected packages
| Package | Affected | Fixed |
|---|---|---|
libdancer2-perlDebian:12 |
All versions, plus listed versions 0.400001+dfsg-11.0.0+dfsg-11.1.0+dfsg-11.1.1+dfsg-11.1.2+dfsg-12.0.1-12.1.0-12.2.2-1 |
None known |
libdancer2-perlDebian:13 |
All versions, plus listed versions 1.1.2+dfsg-12.0.1-12.1.0-12.2.2-1 |
None known |
libdancer2-perlDebian:14 |
before 2.2.2-1, plus listed versions 1.1.2+dfsg-12.0.1-12.1.0-1 |
2.2.2-1 |
libdancer2-perlUbuntu:16.04:LTS |
All versions, plus listed versions 0.160003+dfsg-10.163000+dfsg-10.166001+dfsg-1 |
None known |
libdancer2-perlUbuntu:18.04:LTS |
All versions, plus listed versions 0.205000+dfsg-10.205002+dfsg-10.205002+dfsg-2 |
None known |
libdancer2-perlUbuntu:20.04:LTS |
All versions, plus listed versions 0.208001+dfsg-10.208002+dfsg-10.300000+dfsg-1 |
None known |
libdancer2-perlUbuntu:22.04:LTS |
All versions, plus listed versions 0.300005+dfsg-10.301004+dfsg-1 |
None known |
libdancer2-perlUbuntu:24.04:LTS |
All versions, plus listed versions 0.400001+dfsg-11.0.0+dfsg-11.1.0+dfsg-1 |
None known |
libdancer2-perlUbuntu:26.10 |
All versions, plus listed versions 1.1.2+dfsg-12.1.0-1 |
None known |
libdancer2-perlUbuntu:26.04:LTS |
All versions, plus listed versions 1.1.2+dfsg-1 |
None known |
perl-Dancer2openSUSE:Tumbleweed From an advisory covering 4 CVEs |
before 2.2.2-1.1 | 2.2.2-1.1 |
History
| Recorded | Changed | Sources |
|---|---|---|
| affected, facts | ||
| first indexed | CVE List, EUVD, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2026-93709 is a medium vulnerability (CVSS 5.3) in libdancer2-perl, published September 22, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.45%, the 39th percentile. Fixed in libdancer2-perl 2.2.2-1.
References
github.com/PerlDancer/Dancer2/issues/1823
github.com/PerlDancer/Dancer2/commit/293fce08812b0928f34ab2d7b9357450707c3630.patch
github.com/PerlDancer/Dancer2/commit/753b385350a54acb8d4b686723890205268634a8.patch
metacpan.org/release/CROMEDOME/Dancer2-2.2.0/changes
openwall.com/lists/oss-security/2026/09/22/1
nvd.nist.gov/vuln/detail/CVE-2026-93709
Show 12 moreShow less
github.com/advisories/GHSA-8fpv-59mj-6jfr
cpan.org/modules
github.com/CVEProject/cvelistV5/tree/main/cves/2026/93xxx/CVE-2026-93709.json
github.com/PerlDancer/Dancer2
security-tracker.debian.org/tracker/CVE-2026-93709
ubuntu.com/security/CVE-2026-93709
cve.org/CVERecord?id=CVE-2026-93709
lists.security.metacpan.org/cve-announce/msg/43742968
suse.com/security/cve/CVE-2026-93709
suse.com/security/cve/CVE-2026-93710
suse.com/security/cve/CVE-2026-93711
suse.com/security/cve/CVE-2026-93712