CouchCMS reCAPTCHA config.example.php hard-coded key
A security flaw has been discovered in CouchCMS up to 2.4. Affected is an unknown function of the file couch/config.example.php of the component reCAPTCHA Handler. The manipulation of the argument K_RECAPTCHA_SITE_KEY/K_RECAPTCHA_SECRET_KEY results in use of hard-coded cryptographic key . It is possible to launch the attack remotely. This attack is characterized by high complexity. The exploitability is told to be difficult. The exploit has been released to the public and may be used for attacks.
- Published
- Dec 21, 2025
- Updated
- Jun 17, 2026
- EPSS
- 0.5% · 38th percentile
- CWE
- CWE-320
Sign in to follow · You’ll be notified if a followed record enters KEV, gets an exploit or is updated.
Report tools
Action score
11
Monitor
Low priority for now.
- CVSS
- 11 / 40 · 2.9 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 0 / 30 · 0.5%
CISA SSVC decision
- Exploitation
- proof of concept
- Automatable
- no
- Technical impact
- partial
Vulnrichment: CISA's decision-tree inputs.
CNA vs NVD score
- NVD
- —
- CNA · VulDB
- 6.3
- NVD has not scored this yet; the score shown is the CNA’s.
CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P
The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.
Affected systems
| Vendor | Product | CPE |
|---|---|---|
| couchcms | couchcms | cpe:2.3:a:couchcms:couchcms |
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- couchcms couchcmsup to 2.4 inclusive
Versions reported by the vendor
Affected version ranges reported by the assigning authority (VulDB). Independent of NVD's CPE analysis and usually ahead of it.
n/a CouchCMS
- 2.0, 2.1, 2.2, 2.3, 2.4affected
Same product
couchcms: all recordsOther highest-scoring records for the same primary product.
- CVE-2026-29002CouchCMS Privilege Escalation via f_k_levels_list Parameter34Monitor
- CVE-2025-67004** Disputed ** An Information Disclosure vulnerability in CouchCMS 2.4 allow an Admin user to read arbitrary files via traversing directorie28Monitor
- CVE-2023-41609An open redirect vulnerability in the sanitize_url() parameter of CouchCMS v2.3 allows attackers to redirect a victim user to an arbitrary w24Monitor
- CVE-2021-47958CouchCMS 2.2.1 Server-Side Request Forgery via SVG upload21Monitor
- CVE-2021-47955CouchCMS 2.2.1 Cross-Site Scripting via SVG File Upload20Monitor
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
No fix version is recorded for this entry. Check the references for vendor advisories.
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.
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
No commit or PR link among the references.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
- hiro (VulDB User)reporter
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
No nightly-computed relations.
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
Technical details
Attack conditions
- Anyone who can reach it over the internet can trigger it.
- No account or password is required.
- No user action is required.
- Special conditions such as timing or configuration are required.
If successful
- Confidentiality
- Integrity
- Availability
- Attack vector
- Network
- Attack complexity
- High
- Privileges required
- None
- User interaction
- None
- Scope
- X
Weakness class (CWE)
CWE-320 · Key Management ErrorsCVSS vector
CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
nvd-secondary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
MITRE has no CAPEC/ATT&CK mapping for this CWE.
Noroxi analysis
No Noroxi analysis for this record yet
We don't hand-write analysis for all 385,000+ vulnerabilities; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.
We use this product, ask for helpChange log
No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.
References
Vendor advisories and official records. Exploit/PoC links are deliberately left out.