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CVE-2023-45878

75
FAUCET Score

CVE-2023-45878 is a critical arbitrary file write vulnerability affecting GibbonEdu Gibbon versions 25.0.1 and earlier, allowing unauthenticated attackers to write arbitrary files to the server. This flaw, stemming from an unauthenticated endpoint that accepts image and path parameters, can be leveraged to upload malicious PHP files, leading to unauthenticated Remote Code Execution (RCE). With a CVSS score of 9.8 (Critical) and an EPSS score indicating high exploitability, the vulnerability poses a significant risk. While not yet observed in active exploitation, public exploit code exists in the form of Nuclei templates, and there is community discussion surrounding it, underscoring the urgency for immediate patching.

Impacted Technologies

VendorProductVersion(s)CPE
<= 25.0.01CPE matchmatch criteria
cpe:2.3:a:gibbonedu:gibbon:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
63.11%
Probability of exploitation in next 30 days
EPSS Percentile
99.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
Nuclei: CVE-2023-45878 · Apr 29, 2025
This CVE's current EPSS score of 0.6311 is in the 97th 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

Remediation records are not available for this CVE.

References

herolab.usd.de / security-advisories/usd-2023-0025
ExploitThird Party Advisory