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CVE-2015-10149

Dancer versions before 1.3400 for Perl pass unvalidated session ids from the session cookie to the session engine

Products / packages Dancer

Published

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Severity and exploitation

Not in CISA KEVNo CVSS score

KEV coverage does not rule out exploitation.

KEV checked 15/11/2026, 01:50:31 UTC

Severity

unknown

CVSS measures technical severity, not the likelihood of an attack.

Known exploitation

Not listed in the checked CISA KEV catalog

Absence from CISA KEV does not rule out attacks.

Public exploit

Not established by this record

Missing evidence does not mean no public exploit exists.

Remediation

Source guidance available

Review the recorded instructions. Guidance may be a workaround rather than a fixed version.

What this means

Dancer versions before 1.3400 for Perl pass unvalidated session IDs to the session engine, potentially allowing a remote attacker to cause path traversal or injection. The session ID is not checked for valid characters. This may impact session engines using the ID in file paths or queries.

Summarized by @cf/meta/llama-3.3-70b-instruct-fp8-fast. Verify details against the original sources.

Attack conditions

No attack-condition excerpt has been identified here. Review the full source description and references for authentication, network access, and configuration requirements.

Review supporting sources →

Affected versions

Check the exact model, release, and any platform requirements against your installation.

Vendor not supplied · CPANSec

Dancer

1 range
CPANSec version evidence

Package identity

pkg:cpan/Dancer

Identity supplied by CPANSec. Version matching requires compatible range evidence.

Compare with this publisher’s ranges. This does not inspect your installation.

affected

0 → before 1.3400

custom versions

unaffected

unknown

Other versions: unaffected

Automatic dependency matching is unavailable for this record. Use the product evidence and publisher’s instructions to check your installation.

What to do

Compare your installed product and version with the affected versions above. A matching product name alone does not confirm exposure.

Upgrade to Dancer 1.3400 or later.

CPANSec guidance ↗

cve.new guidance unless attributed to a publisher. This page does not inspect your installation.

Public exploit evidence

No public exploit reference is identified in the imported evidence. This is not a claim that no exploit exists.

Original source description

Read the full publisher description

Dancer versions before 1.3400 for Perl pass unvalidated session ids from the session cookie to the session engine.

read_session_id returns the cookie value as the session id without checking its characters, and Dancer hands it to the session engine to load the session.

A remote attacker may cause path traversal or injection in a session engine that uses the id in a file path, cache command or query without checking it.

References

6 sources
PerlDancer/Dancer · commit 5a68fdd
PatchCPANSec
PerlDancer/Dancer · issues/1117
Source referenceCPANSec
PerlDancer/Dancer · issues/1118
Source referenceCPANSec
PerlDancer/Dancer · pull request #1172
PatchCPANSec
metacpan.org/release/BIGPRESH/Dancer-1.3400/changes
Source referenceCPANSec
www.openwall.com/lists/oss-security/2026/11/14/15
Security advisoryCVE

Inside the record

Evidence available

Package identity
Version evidence
Remediation guidance
Weakness classification
Additional publishers

Describes the evidence in this view, not whether the product is safe.

Original records

CVE-2015-10149

View the latest unmodified CVE JSON from the official source. It may be newer than this imported page.

cve.new JSON →

Underlying weaknesses

The source’s classification of what caused the vulnerability.

CWE-1286 ↗

CWE-1286 Improper Validation of Syntactic Correctness of Input

CPANSec

Related →
Contributing organizations · 2
CPANSec

Assigning organization

2026-11-14
CVE

Additional data publisher

2026-11-14

Timeline

All times UTC

  1. Advisory published

    Publication date supplied by the source.

  2. Source updated

    Latest modification date supplied by the source.

  3. Last imported by cve.new

    Latest catalog import, not the date we first saw this advisory.

What changed

Follow changes
  1. CVE · CVE-2015-10149

    Observed 2026-11-14T23:15:42.560Z · upstream updated 2026-11-14T23:05:03.050Z

    References changed

    before

    [
  "https://github.com/PerlDancer/Dancer/commit/5a68fddbaef903fd3bd58517ce585cde986716e4.patch",
  "https://github.com/PerlDancer/Dancer/issues/1117",
  "https://github.com/PerlDancer/Dancer/issues/1118",
  "https://github.com/PerlDancer/Dancer/pull/1172",
  "https://metacpan.org/release/BIGPRESH/Dancer-1.3400/changes"
]

    after

    [
  "https://github.com/PerlDancer/Dancer/commit/5a68fddbaef903fd3bd58517ce585cde986716e4.patch",
  "https://github.com/PerlDancer/Dancer/issues/1117",
  "https://github.com/PerlDancer/Dancer/issues/1118",
  "https://github.com/PerlDancer/Dancer/pull/1172",
  "https://metacpan.org/release/BIGPRESH/Dancer-1.3400/changes",
  "http://www.openwall.com/lists/oss-security/2026/11/14/15"
]

Large field values are marked as truncated previews. Original source snapshots remain retained.

Showing up to 50 most recent observed changes.