How severe is CVE-2001-1545?

CVE-2001-1545 has a CVSS 2.0 base score of 5.0, rated medium severity.

Is CVE-2001-1545 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (69th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2001-1545?

CVE-2001-1545 primarily affects Macromedia Jrun. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2001-1545?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2001-1545 published?

CVE-2001-1545 was published on 2001-12-31 and last updated on 2026-06-16.

CVE-2001-1545

CVE-2001-1545 is a medium-severity vulnerability in Macromedia Jrun with a CVSS 2.0 base score of 5.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Medium (CVSS 2.0 base score 5.0)
EPSS exploit prediction: 1% (69th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Macromedia Jrun
Published: 2001-12-31
Last modified: 2026-06-16

Description

Macromedia JRun 3.0 and 3.1 appends the jsessionid to URL requests (a.k.a. rewriting) when client browsers have cookies enabled, which allows remote attackers to obtain session IDs and hijack sessions via HTTP referrer fields or sniffing.

Frequently asked questions

What is CVE-2001-1545?: Macromedia JRun 3.0 and 3.1 appends the jsessionid to URL requests (a.k.a. rewriting) when client browsers have cookies enabled, which allows remote attackers to obtain session IDs and hijack sessions via HTTP referrer fields or sniffing.
How severe is CVE-2001-1545?: CVE-2001-1545 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2001-1545 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (69th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2001-1545?: CVE-2001-1545 primarily affects Macromedia Jrun. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2001-1545?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2001-1545 published?: CVE-2001-1545 was published on 2001-12-31 and last updated on 2026-06-16.

References

Affected products (2)

cpe:2.3:a:macromedia:jrun:3.0:*:*:*:*:*:*:*
cpe:2.3:a:macromedia:jrun:3.1:*:*:*:*:*:*:*

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