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CVE-2016-4977

81
FAUCET Score

CVE-2016-4977 is a critical remote code execution vulnerability affecting Spring Security OAuth versions 2.0.0-2.0.9 and 1.0.0-1.0.5. It allows an authenticated attacker to execute arbitrary code by manipulating the response_type parameter in authorization requests, which is improperly processed as Spring SpEL. This vulnerability carries a high CVSS score of 8.8, indicating a severe impact with high confidentiality, integrity, and availability compromise. While there is no evidence of active exploitation in the wild, exploit templates exist, and its high EPSS score suggests a significant likelihood of future exploitation.

Impacted Technologies

VendorProductVersion(s)CPE
1.0.0CPE matchmatch criteria
cpe:2.3:a:pivotal:spring_security_oauth:1.0.0:*:*:*:*:*:*:*
1.0.1CPE matchmatch criteria
cpe:2.3:a:pivotal:spring_security_oauth:1.0.1:*:*:*:*:*:*:*
1.0.2CPE matchmatch criteria
cpe:2.3:a:pivotal:spring_security_oauth:1.0.2:*:*:*:*:*:*:*
1.0.3CPE matchmatch criteria
cpe:2.3:a:pivotal:spring_security_oauth:1.0.3:*:*:*:*:*:*:*
1.0.4CPE matchmatch criteria
cpe:2.3:a:pivotal:spring_security_oauth:1.0.4:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

8.8HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
79.18%
Probability of exploitation in next 30 days
EPSS Percentile
99.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
Nuclei: CVE-2016-4977 · Jan 5, 2022
This CVE's current EPSS score of 0.7918 is in the 99th percentile among its peer group of 17,805 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.3 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

mavenpatch availablevia ghsa
Product: org.springframework.security.oauth:spring-security-oauth2Fixed in: 2.0.10
mavenpatch availablevia ghsa
Product: org.springframework.security.oauth:spring-security-oauth2Fixed in: 1.0.5

Vendor Advisories (1)

mavenGHSA-7q9c-h23x-65fqhigh

Spring Security OAuth vulnerable to remote code execution (RCE) via specially crafted request using whitelabel views

Oct 18, 2018

References

lists.apache.org / thread.html/0841d849c23418c473ccb9183cbf41a317cb0476e44be48022ce3488%40%3Cdev.fineract.apache.org%3E
lists.apache.org / thread.html/37d7e820fc65a768de3e096e98382d5529a52a039f093e59357d0bc0%40%3Cdev.fineract.apache.org%3E
lists.apache.org / thread.html/5e6dd946635bbcc9e1f2591599ad0fab54f2dc3714196af3b17893f2%40%3Cannounce.apache.org%3E
lists.apache.org / thread.html/96c017115069408cec5e82ce1e6293facab398011f6db7e1befbe274%40%3Cdev.fineract.apache.org%3E
pivotal.io / security/cve-2016-4977
Vendor Advisory
openwall.com / lists/oss-security/2019/10/16/1