WebDyne::Session versions through 2.075 for Perl generates the session id insecurely.
The session handler generates the session id from an MD5 hash seeded with a call to the built-in rand() function. The rand function is passed a maximum value based on the process id, the epoch time and the reference address of the object, but this information will have no effect on the overall quality of the seed of the message digest.
The rand function is seeded by 32-bits and is predictable. It is considered unsuitable for cryptographic purposes.
Predictable session ids could allow an attacker to gain access to systems.
Note that WebDyne::Session versions 1.042 and earlier appear to be in separate distributions from WebDyne.
The session handler generates the session id from an MD5 hash seeded with a call to the built-in rand() function. The rand function is passed a maximum value based on the process id, the epoch time and the reference address of the object, but this information will have no effect on the overall quality of the seed of the message digest.
The rand function is seeded by 32-bits and is predictable. It is considered unsuitable for cryptographic purposes.
Predictable session ids could allow an attacker to gain access to systems.
Note that WebDyne::Session versions 1.042 and earlier appear to be in separate distributions from WebDyne.
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| ASPEER | WebDyne::Session | unaffected |
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Advisories
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Fixes
Solution
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Workaround
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References
History
Mon, 11 May 2026 07:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | WebDyne::Session versions through 2.075 for Perl generates the session id insecurely. The session handler generates the session id from an MD5 hash seeded with a call to the built-in rand() function. The rand function is passed a maximum value based on the process id, the epoch time and the reference address of the object, but this information will have no effect on the overall quality of the seed of the message digest. The rand function is seeded by 32-bits and is predictable. It is considered unsuitable for cryptographic purposes. Predictable session ids could allow an attacker to gain access to systems. Note that WebDyne::Session versions 1.042 and earlier appear to be in separate distributions from WebDyne. | |
| Title | WebDyne::Session versions through 2.075 for Perl generates the session id insecurely | |
| Weaknesses | CWE-338 CWE-340 |
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MITRE
Status: PUBLISHED
Assigner: CPANSec
Published:
Updated: 2026-05-11T06:37:19.384Z
Reserved: 2026-03-28T19:18:57.110Z
Link: CVE-2026-5084
Vulnrichment
No data.
NVD
Status : Received
Published: 2026-05-11T08:16:16.210
Modified: 2026-05-11T08:16:16.210
Link: CVE-2026-5084
Redhat
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OpenCVE Enrichment
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