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CVE-2023-27580

16
FAUCET Score

CVE-2023-27580 is a medium-severity vulnerability affecting CodeIgniter Shield versions 1.0.0-beta.3 and earlier, stemming from an improper password storage implementation. This flaw makes hashed passwords easier to crack if an attacker obtains both the Shield-stored hash and an unsalted SHA-384 hash from another source. Rated 5.9 CVSSv3.1 (AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N), it has a high confidentiality impact with high attack complexity, requiring specific conditions for exploitation. There are no known workarounds, active exploits, or public exploit code, and it has received minimal community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
1.0.0CPE matchmatch criteria
cpe:2.3:a:codeigniter:shield:1.0.0:beta:*:*:*:*:*:*
1.0.0CPE matchmatch criteria
cpe:2.3:a:codeigniter:shield:1.0.0:beta2:*:*:*:*:*:*
1.0.0CPE matchmatch criteria
cpe:2.3:a:codeigniter:shield:1.0.0:beta3:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.52%
Probability of exploitation in next 30 days
EPSS Percentile
40.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0052 is in the 6th percentile among its peer group of 19,956 CVEs.

Social Chatter

No social media mentions found for this CVE.

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

Media Mentions

No media coverage found for this CVE.

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

Remediation

Patch Available

Vendor Patches (2)

composerpatch availablevia ghsa
Product: codeigniter4/shieldFixed in: 1.0.0-beta.4
github_advisorypatch availablevia nvd_reference
View patch

Vendor Advisories (1)

composerGHSA-c5vj-f36q-p9vgmedium

Password Shucking Vulnerability

Mar 13, 2023

References

blog.ircmaxell.com / 2015/03/security-issue-combining-bcrypt-with.html
Third Party Advisory
cheatsheetseries.owasp.org / cheatsheets/Password_Storage_Cheat_Sheet.html
Not Applicable
github.com / codeigniter4/shield/blob/develop/UPGRADING.md
Vendor Advisory
github.com / codeigniter4/shield/commit/ea9688dd01d100193d834117dbfc2cfabcf9ea0b
Patch
github.com / codeigniter4/shield/security/advisories/GHSA-c5vj-f36q-p9vg
Vendor Advisory
scottbrady91.com / authentication/beware-of-password-shucking
Third Party Advisory