How severe is CVE-2017-18262?

CVE-2017-18262 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2017-18262 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (71st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-18262?

CVE-2017-18262 primarily affects Blackboard Blackboard Learn. In total, 6 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2017-18262?

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

When was CVE-2017-18262 published?

CVE-2017-18262 was published on 2018-04-30 and last updated on 2026-06-17.

CVE-2017-18262

CVE-2017-18262 is a medium-severity vulnerability in Blackboard Blackboard Learn with a CVSS 3.x base score of 6.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-20.

Key facts

Severity: Medium (CVSS 3.x base score 6.1)
CVSS v2: 5.8
EPSS exploit prediction: 1% (71st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Blackboard Blackboard Learn
Published: 2018-04-30
Last modified: 2026-06-17

Description

Blackboard Learn (Since at least 17th of October 2017) has allowed Unvalidated Redirects on any signed-in user through its endpoints for handling Shibboleth logins, as demonstrated by a webapps/bb-auth-provider-shibboleth-BBLEARN/execute/shibbolethLogin?returnUrl= URI.

Frequently asked questions

What is CVE-2017-18262?: Blackboard Learn (Since at least 17th of October 2017) has allowed Unvalidated Redirects on any signed-in user through its endpoints for handling Shibboleth logins, as demonstrated by a webapps/bb-auth-provider-shibboleth-BBLEARN/execute/shibbolethLogin?returnUrl= URI.
How severe is CVE-2017-18262?: CVE-2017-18262 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2017-18262 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (71st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-18262?: CVE-2017-18262 primarily affects Blackboard Blackboard Learn. In total, 6 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2017-18262?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2017-18262 published?: CVE-2017-18262 was published on 2018-04-30 and last updated on 2026-06-17.

References

Affected products (6)

cpe:2.3:a:blackboard:blackboard_learn:*:*:*:*:*:*:*:*
cpe:2.3:a:blackboard:blackboard_learn:9.1:q2_2016:*:*:*:*:*:*
cpe:2.3:a:blackboard:blackboard_learn:9.1:q2_2017:*:*:*:*:*:*
cpe:2.3:a:blackboard:blackboard_learn:9.1:q4_2015:*:*:*:*:*:*
cpe:2.3:a:blackboard:blackboard_learn:9.1:q4_2016:*:*:*:*:*:*
cpe:2.3:a:blackboard:blackboard_learn:9.1:q4_2017:*:*:*:*:*:*

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