CVE-2026-93710
Dancer2 versions from 2.0.0 before 2.2.0 for Perl dispatch a route that a dying hook refused when the exception handler halts the response in compile_hooks
Dancer2 versions from 2.0.0 before 2.2.0 for Perl dispatch a route that a dying hook refused when the exception handler halts the response in compile_hooks.
A hook that dies fires core.app.hook_exception, then calls cleanup unless the failing hook is the exception handler. A handler that halts does not stop that cleanup, which discards the request, response and session the dispatcher has yet to read, so the refused route runs.
The handler has to halt the response object by calling its halt method or setting is_halted: the halt keyword unwinds through with_return before cleanup runs.
A check in a before hook is not enforced: the caller gets the refusal, while the route body runs and its writes land.
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
- None
- Integrity
- None
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
7.5
Dancer2 versions from 2.0.0 before 2.2.0 for Perl dispatch a route that a dying hook refused when the exception handler halts the response in compile_hooks
Dancer2 versions from 2.0.0 before 2.2.0 for Perl dispatch a route that a dying hook refused when the exception handler halts the response in compile_hooks.
A hook that dies fires core.app.hook_exception, then calls cleanup unless the failing hook is the exception handler. A handler that halts does not stop that cleanup, which discards the request, response and session the dispatcher has yet to read, so the refused route runs.
The handler has to halt the response object by calling its halt method or setting is_halted: the halt keyword unwinds through with_return before cleanup runs.
A check in a before hook is not enforced: the caller gets the refusal, while the route body runs and its writes land.
- Record
CVE-2026-93710- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-460
- Updated
- 2026-11-02
EUVDEUVD-2026-84256
7.5
Dancer2 versions from 2.0.0 before 2.2.0 for Perl dispatch a route that a dying hook refused when the exception handler halts the response in compile_hooks.
A hook that dies fires core.app.hook_exception, then calls cleanup unless the failing hook is the exception handler. A handler that halts does not stop that cleanup, which discards the request, response and session the dispatcher has yet to read, so the refused route runs.
The handler has to halt the response object by calling its halt method or setting is_halted: the halt keyword unwinds through with_return before cleanup runs.
A check in a before hook is not enforced: the caller gets the refusal, while the route body runs and its writes land.
- Record
EUVD-2026-84256- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-qp5m-r6hx-rjhj
7.5
Dancer2 versions from 2.0.0 before 2.2.0 for Perl dispatch a route that a dying hook refused when...
Dancer2 versions from 2.0.0 before 2.2.0 for Perl dispatch a route that a dying hook refused when the exception handler halts the response in compile_hooks.
A hook that dies fires core.app.hook_exception, then calls cleanup unless the failing hook is the exception handler. A handler that halts does not stop that cleanup, which discards the request, response and session the dispatcher has yet to read, so the refused route runs.
The handler has to halt the response object by calling its halt method or setting is_halted: the halt keyword unwinds through with_return before cleanup runs.
A check in a before hook is not enforced: the caller gets the refusal, while the route body runs and its writes land.
- Record
GHSA-qp5m-r6hx-rjhj- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-460
- Updated
- 2026-11-02
NVD
7.5
Dancer2 versions from 2.0.0 before 2.2.0 for Perl dispatch a route that a dying hook refused when the exception handler halts the response in compile_hooks.
A hook that dies fires core.app.hook_exception, then calls cleanup unless the failing hook is the exception handler. A handler that halts does not stop that cleanup, which discards the request, response and session the dispatcher has yet to read, so the refused route runs.
The handler has to halt the response object by calling its halt method or setting is_halted: the halt keyword unwinds through with_return before cleanup runs.
A check in a before hook is not enforced: the caller gets the refusal, while the route body runs and its writes land.
- Record
CVE-2026-93710- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-460
- Updated
- 2026-11-02
OSV
7.5
Dancer2 versions from 2.0.0 before 2.2.0 for Perl dispatch a route that a dying hook refused when the exception handler halts the response in compile_hooks
Dancer2 versions from 2.0.0 before 2.2.0 for Perl dispatch a route that a dying hook refused when the exception handler halts the response in compile_hooks.
A hook that dies fires core.app.hook_exception, then calls cleanup unless the failing hook is the exception handler. A handler that halts does not stop that cleanup, which discards the request, response and session the dispatcher has yet to read, so the refused route runs.
The handler has to halt the response object by calling its halt method or setting is_halted: the halt keyword unwinds through with_return before cleanup runs.
A check in a before hook is not enforced: the caller gets the refusal, while the route body runs and its writes land.
- Record
CVE-2026-93710- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-460
- Updated
- 2026-11-02
OSVDEBIAN-CVE-2026-93710
7.5
Dancer2 versions from 2.0.0 before 2.2.0 for Perl dispatch a route that a dying hook refused when the exception handler halts the response in compile_hooks. A hook that dies fires core.app.hook_exception, then calls cleanup unless the failing hook is the exception handler. A handler that halts does not stop that cleanup, which discards the request, response and session the dispatcher has yet to read, so the refused route runs. The handler has to halt the response object by calling its halt method or setting is_halted: the halt keyword unwinds through with_return before cleanup runs. A check in a before hook is not enforced: the caller gets the refusal, while the route body runs and its writes land.
- Record
DEBIAN-CVE-2026-93710- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
OSVUBUNTU-CVE-2026-93710
7.5
Dancer2 versions from 2.0.0 before 2.2.0 for Perl dispatch a route that a dying hook refused when the exception handler halts the response in compile_hooks. A hook that dies fires core.app.hook_exception, then calls cleanup unless the failing hook is the exception handler. A handler that halts does not stop that cleanup, which discards the request, response and session the dispatcher has yet to read, so the refused route runs. The handler has to halt the response object by calling its halt method or setting is_halted: the halt keyword unwinds through with_return before cleanup runs. A check in a before hook is not enforced: the caller gets the refusal, while the route body runs and its writes land.
- Record
UBUNTU-CVE-2026-93710- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - 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: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-2026-93710 is a high vulnerability (CVSS 7.5) 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 0.63%, the 50th percentile. Fixed in libdancer2-perl 2.2.2-1.
References
github.com/PerlDancer/Dancer2/security/advisories/GHSA-v527-r4px-7vx7
github.com/PerlDancer/Dancer2/commit/8fd31a32798f9aa25e4fccbd6c7cb9dd3a0c1029.patch
metacpan.org/release/CROMEDOME/Dancer2-2.2.0/changes
openwall.com/lists/oss-security/2026/09/22/2
nvd.nist.gov/vuln/detail/CVE-2026-93710
github.com/advisories/GHSA-qp5m-r6hx-rjhj
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cpan.org/modules
github.com/CVEProject/cvelistV5/tree/main/cves/2026/93xxx/CVE-2026-93710.json
github.com/PerlDancer/Dancer2
security-tracker.debian.org/tracker/CVE-2026-93710
ubuntu.com/security/CVE-2026-93710
cve.org/CVERecord?id=CVE-2026-93710
lists.security.metacpan.org/cve-announce/msg/43742969
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