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NVD / CVE Program· CNA mitre

CVE-2016-9451: Confirmation forms in Drupal 7.x before 7.52 make it easier for remote authenticated users to conduct open redirect attacks via unspecified…

MediumCVSS 6.8 · v3.0—No exploit Fix available

Noroxi assessment

Priority: Monitor (action score 27/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 1.5% (FIRST EPSS); higher than 75.3% of all records.
  • Anyone who can reach it over the internet can trigger it. A low-privileged account is enough. A user must open a link or visit a page. No special conditions are required; it is repeatable.
  • Fixed version: drupal7 (Debian:7) 7.14-2+deb7u15; drupal7 (Debian:8) 7.32-1+deb8u8; drupal/core (Packagist) 7.52, 8.2.3.

Low priority for now. Upgrade to drupal7 (Debian:7) 7.14-2+deb7u15; drupal7 (Debian:8) 7.32-1+deb8u8; drupal/core (Packagist) 7.52, 8.2.3 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

Confirmation forms in Drupal 7.x before 7.52 make it easier for remote authenticated users to conduct open redirect attacks via unspecified vectors.

Published
Nov 25, 2016
Updated
Jun 16, 2026
EPSS
1.5% · 75th percentile

Report tools

JSON

Action score

27

Monitor

Low priority for now.

CVSS
27 / 40 · 6.8 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 1.5%

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

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When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
drupaldrupal

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • drupal drupal7.0
  • drupal drupal7.1
  • drupal drupal7.10
  • drupal drupal7.11
  • drupal drupal7.12
  • drupal drupal7.13
  • drupal drupal7.14
  • drupal drupal7.15
+12 more rows
  • drupal drupal7.16
  • drupal drupal7.17
  • drupal drupal7.18
  • drupal drupal7.19
  • drupal drupal7.2
  • drupal drupal7.20
  • drupal drupal7.21
  • drupal drupal7.22
  • drupal drupal7.23
  • drupal drupal7.24
  • drupal drupal7.25
  • drupal drupal7.26

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:7drupal7before 7.14-2+deb7u157.14-2+deb7u15
Debian:8drupal7before 7.32-1+deb8u87.32-1+deb8u8
Packagistdrupal/corefrom 7.0 · before 7.527.52
Packagistdrupal/corefrom 8.0 · before 8.2.38.2.3

Same product

drupal: all records

Other highest-scoring records for the same primary product.

  • CVE-2018-7602Drupal core - Highly critical - Remote Code Execution - SA-CORE-2018-004KEV
    99Now
  • CVE-2018-7600Drupal before 7.58, 8.x before 8.3.9, 8.4.x before 8.4.6, and 8.5.x before 8.5.1 allows remote attackers to execute arbitrary code because…KEV
    99Now
  • CVE-2026-9082Drupal core - Highly critical - SQL injection - SA-CORE-2026-004KEV
    96Now

Published before and after this one in the same product

  • ← EarlierCVE-2016-9449Nov 25, 2016 · The taxonomy module in Drupal 7.x before 7.52 and 8.x before 8.2.3 might allow remote authenticated users to obtain sensitive information…
    18Monitor
  • ← EarlierCVE-2016-9450Nov 25, 2016 · The user password reset form in Drupal 8.x before 8.2.3 allows remote attackers to conduct cache poisoning attacks by leveraging failure to…
    30Monitor
  • Later →CVE-2016-9452Nov 25, 2016 · The transliterate mechanism in Drupal 8.x before 8.2.3 allows remote attackers to cause a denial of service via a crafted URL.
    27Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
debian:drupal77.14-2+deb7u15 · Debian:7Package registry (OSV)
Packagist:drupal/core7.52Package registry (OSV)
Packagist:drupal/core8.2.3Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

Not on record for this CVE: EPSS history · patch commit or PR link · researcher credit · variant or chain candidate · public bounty program.

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • A low-privileged account is enough.
  • A user must open a link or visit a page.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
none
Integrity
high · data or configuration can be modified
Availability
none

Impact can extend beyond the vulnerable component (scope changes).

Attack vector
Network
Attack complexity
Low
Privileges required
Low
User interaction
Required
Scope
Changed
Confidentiality impact
None
Integrity impact
High
Availability impact
None

Weakness class (CWE)

CWE-601 · URL Redirection to Untrusted Site ('Open Redirect')

CVSS vector

CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:N/I:H/A:N

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

ATT&CK techniques

—

References

Show all references (2 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records