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CVE-2023-1789

31
FAUCET Score

CVE-2023-1789 is a critical improper input validation vulnerability affecting Firefly III versions prior to 6.0.0. This flaw allows an unauthenticated attacker to remotely execute arbitrary code, compromise data confidentiality and integrity, and disrupt service availability. With a CVSS score of 9.8, it represents a severe risk, though there is no evidence of active exploitation, public exploit code, or inclusion in CISA's KEV catalog. Despite the lack of public exploits, the vulnerability has garnered significant community discussion, indicating awareness among security researchers.

Impacted Technologies

VendorProductVersion(s)CPE
< 5.7.18CPE matchmatch criteria
cpe:2.3:a:firefly-iii:firefly_iii:*:*:*:*:*:*:*:*
5.8.0CPE matchmatch criteria
cpe:2.3:a:firefly-iii:firefly_iii:5.8.0:alpha1:*:*:*:*:*:*
6.0.0CPE matchmatch criteria
cpe:2.3:a:firefly-iii:firefly_iii:6.0.0:alpha1:*:*:*:*:*:*
6.0.0CPE matchmatch criteria
cpe:2.3:a:firefly-iii:firefly_iii:6.0.0:alpha2:*:*:*:*:*:*
6.0.0CPE matchmatch criteria
cpe:2.3:a:firefly-iii:firefly_iii:6.0.0:beta1:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

5.2MEDIUM

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
LOW
Exploitability Score
1.1
Impact Score
3.7
CvssVersion
3.0

Exploit Intelligence

EPSS Score
0.34%
Probability of exploitation in next 30 days
EPSS Percentile
26.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0034 is in the 4th percentile among its peer group of 36,833 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

composerpatch availablevia ghsa
Product: grumpydictator/firefly-iiiFixed in: 6.0.0
github_advisorypatch availablevia nvd_reference
View patch

Vendor Advisories (1)

composerGHSA-mwxw-hxvp-4r2rmedium

Firefly III vulnerable to improper input validation

Apr 1, 2023

References

github.com / firefly-iii/firefly-iii/commit/6b05c0fbd3e8c40ae9b24dc2698821786fccf0c5
Patch
huntr.dev / bounties/2c3489f7-6b84-48f8-9368-9cea67cf373d
Permissions Required