HOMEVULNERABILITIESCVE-2017-18262
MEDIUM

CVE-2017-18262

CWE-20Published: April 30, 2018· Updated: Jun 17, 2026

6.1
CVSS v3.1

Official 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.

NVD Source

Technical Analysis

CVE-2017-18262 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation does not require any privileges, though user interaction (Required) is needed, which slightly reduces the risk of mass automated attacks.

The vulnerability has a "Changed" scope, meaning successful exploitation can impact components beyond the vulnerable component itself — such as the host operating system or adjacent services.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionRequired
ScopeChanged
Impact
ConfidentialityLow
IntegrityLow
AvailabilityNone
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Affected Vendors & Products

blackboard1 product(s)
blackboard learn
Source: NVD CPE · 2 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

ADVISORYhttp://seclists.org/fulldisclosure/2018/Apr/57
ADVISORYhttp://www.securitytracker.com/id/1040767
ADVISORYhttps://ethan.pm/blackboard.txt
ADVISORYhttp://seclists.org/fulldisclosure/2018/Apr/57
ADVISORYhttp://www.securitytracker.com/id/1040767
ADVISORYhttps://ethan.pm/blackboard.txt

All References (6)

→
http://seclists.org/fulldisclosure/2018/Apr/57Mailing List · Third Party Advisory
→
http://www.securitytracker.com/id/1040767Third Party Advisory · VDB Entry
→
https://ethan.pm/blackboard.txtThird Party Advisory
→
http://seclists.org/fulldisclosure/2018/Apr/57Mailing List · Third Party Advisory
→
http://www.securitytracker.com/id/1040767Third Party Advisory · VDB Entry
→
https://ethan.pm/blackboard.txtThird Party Advisory

Quick Facts

CVE IDCVE-2017-18262
CVSS Score6.1 / 10
SeverityMEDIUM
WeaknessCWE-20
CISA KEVNo
Affected1 vendor(s)
PublishedApr 30, 2018

Related CVEs (CWE-20)

CVE-2011-0923
10.0
CVE-2011-1018
10.0
CVE-2007-6494
10.0
CVE-2009-0545
10.0
CVE-2007-4915
10.0
CVE-2011-0285
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2017-18262 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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