Paymenter is a free and open-source webshop solution for management of hosting services. In versions prior to 1.5.0, the PayPal webhook endpoint /extensions/paypal/webhook processes the PAYPAL-CERT-URL HTTP header without validation, allowing attackers to control server-side HTTP request destinations. This value is passed directly into a server-side HTTP request via file_get_contents, allowing attackers to control the destination of the request. No allowlist, validation, or signature verification is applied to the header before usage. As a result, the application can be coerced into performing HTTP requests to attacker-controlled or internal network destinations. This vulnerability allows remote unauthenticated attackers to induce server-side HTTP GET requests to arbitrary external or internal endpoints. Depending on network configuration, this may lead to: blind SSRF to external attacker-controlled systems, and potential access to internal network services No direct response data is returned to the attacker (blind SSRF), but the issue may still enable sensitive network probing or data exfiltration via side channels. This issue has been fixed in version 1.5.0.
CVE-2026-44583
“—” beside the score: it is equal to the CVSS score beside it.
This medium-severity CVE scores 5.3 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.4% (35th percentile of EPSS-scored CVEs). No GitHub Security Advisory CVSS is on record for this CVE.
Also known asEUVD-2026-46089 (ENISA EUVD) · GHSA-7wwh-xcc3-9fcg (GitHub Security Advisories)Source: ENISA EUVD
- Lower severity and no public exploit yet
A fix is available — apply it.
- CVSS v3
- 5.3
- EG Score
- 5.3MEDIUMmedium confidence
- EG Risk
- 39EG Risk 39/100
EG Risk is EchelonGraph's 0–100 priority score. It fuses impact severity (EG Severity, the CVSS base score, never the KEV-floored or EPSS-lifted EG Score) with real-world exploitation and automatability, under weights EchelonGraph set by hand, so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner.
How it’s computed (value × EchelonGraph’s weight)Severity53% × 45%Impact severity (EG Severity): CVSS 5.3 of 10. Never the KEV-floored or EPSS-lifted EG Score.Exploitation0.4% × 40%FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.Automatability100% × 15%CISA's SSVC Automatable value: yes (Vulnrichment).SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Attend at high (mission-essential systems).Exploitation none (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.Action: A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high. - EPSS PROB
- 0.4%
- EPSS %ILE
- 35th
- KEV
- Not listed
What the EG score is made of (scorer v4.0: the three questions the 0–10 score mixes, published apart · methodology)
The EG score (5.3): severity, escalated by confirmed exploitation. This CVE's 5.3 is its impact severity (EG Severity), not escalated.
- EG Severity
- 5.3 MEDIUMCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.a secondary CVSS source · CVSS v3.0 or v3.1
- EG Likelihood
- 0.4% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-10-24). FIRST's exploitation probability, not an EchelonGraph model.
- Confirmed exploitation
- None on record (CISA KEV, EG-KEV Tier 1)Reported apart from the likelihood: an observed fact, not a probability.
- EG Priority
- SSVC Track at medium mission impactTrack at low or medium mission impact; Attend at high (mission-essential systems).CISA BOD 26-04: 14 days if the affected system is publicly exposed; 60 days if it is not.Each input and its source: the SSVC and BOD 26-04 blocks below.
SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Attend at high (mission-essential systems).
A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
Exploitation none (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table
BOD 26-04 (CISA's remediation timeline, Table 1)14 days if the affected system is publicly exposed; 60 days if it is not.
In CISA KEV no (CISA's KEV catalog) · Automatable yes (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it
Published
June 22, 2026
Last Modified
July 23, 2026
Advisory Details (1)
Auto-updated Jul 20, 2026Unauthenticated Blind SSRF on the Paypal gateway module · Advisory · Paymenter/Paymenter · GitHub
https://github.com/Paymenter/Paymenter/security/advisories/GHSA-7wwh-xcc3-9fcgVendor Advisories for CVE-2026-44583(1)
These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.
Affected Packages
(1 across 1 ecosystem)
Packagist(1)
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| paymenter/paymenter | 0.1 ... v1.1.1 (32 versions) |
| — |
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 9× in last 7d / 35× in last 30d)
Each row is a time one of our pipelines fetched, updated or re-scored this CVE. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.
Showing the most recent 100 of 121 refreshes on record for this CVE.
A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. None are among the latest 100 rows. The 21 oldest rows on record are not shown and were not checked, so the counts can still include repeats.
- 2026-10-27 16:32 UTCEPSS rescoreEPSS 0.4% · 35th percentile
- 2026-10-26 16:31 UTCEPSS rescoreEPSS 0.4% · 35th percentile
- 2026-10-25 16:33 UTCEPSS rescoreEPSS 0.4% · 35th percentile
- 2026-10-25 14:27 UTCEG score recompute
- 2026-10-24 16:33 UTCEPSS rescoreEPSS 0.4% · 34th percentile
- 2026-10-23 16:31 UTCEPSS rescoreEPSS 0.4% · 34th percentile
- 2026-10-22 23:44 UTCEG score recompute
- 2026-10-22 16:34 UTCEPSS rescoreEPSS 0.4% · 34th percentile
- 2026-10-21 16:33 UTCEPSS rescoreEPSS 0.4% · 34th percentile
- 2026-10-20 16:33 UTCEPSS rescoreEPSS 0.4% · 34th percentile
- 2026-10-19 16:32 UTCEPSS rescoreEPSS 0.4% · 34th percentile
- 2026-10-18 16:32 UTCEPSS rescoreEPSS 0.4% · 34th percentile
- 2026-10-18 03:39 UTCEG score recompute
- 2026-10-17 16:34 UTCEPSS rescoreEPSS 0.4% · 34th percentile
- 2026-10-16 16:42 UTCEPSS rescoreEPSS 0.4% · 34th percentile
- 2026-10-15 16:32 UTCEPSS rescoreEPSS 0.4% · 34th percentile
- 2026-10-14 16:33 UTCEPSS rescoreEPSS 0.4% · 34th percentile
- 2026-10-13 16:34 UTCEPSS rescoreEPSS 0.4% · 34th percentile
- 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
- 2026-10-12 16:05 UTCEG score recompute
- 2026-10-11 19:47 UTCEG score recompute
- 2026-10-11 17:01 UTCEG score recompute
- 2026-10-11 14:27 UTCEG score recompute
- 2026-10-11 13:48 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
- 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
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- 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
- 2026-10-08 17:12 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
- 2026-10-08 05:24 UTCOSV refresh
- 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
- 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
- 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
- 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
- 2026-10-03 14:25 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
- 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
- 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
- 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
- 2026-09-26 15:58 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
- 2026-09-23 17:53 UTCEPSS rescoreEPSS 0.4% · 35th percentile
- 2026-09-20 20:15 UTCEPSS rescoreEPSS 0.4% · 35th percentile
- 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.4% · 35th percentile
- 2026-09-18 11:14 UTCEG score recompute
- 2026-09-17 19:31 UTCEPSS rescoreEPSS 0.4% · 35th percentile
- 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.4% · 35th percentile
- 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.4% · 35th percentile
- 2026-09-13 16:47 UTCEPSS rescoreEPSS 0.4% · 34th percentile
- 2026-09-13 12:31 UTCEG score recompute
- 2026-09-12 15:01 UTCEPSS rescoreEPSS 0.4% · 35th percentile
- 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.4% · 34th percentile
- 2026-09-11 09:37 UTCEPSS rescoreEPSS 0.4% · 34th percentile
- 2026-09-10 09:34 UTCEPSS rescoreEPSS 0.4% · 34th percentile
- 2026-09-08 22:00 UTCEPSS rescoreEPSS 0.4% · 34th percentile
- 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.4% · 34th percentile
- 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.4% · 34th percentile
- 2026-09-04 05:06 UTCEPSS rescoreEPSS 0.4% · 34th percentile
- 2026-09-02 14:12 UTCEPSS rescoreEPSS 0.4% · 34th percentile
- 2026-09-01 13:54 UTCEPSS rescoreEPSS 0.4% · 34th percentile
- 2026-08-30 20:32 UTCEG score recompute
- 2026-08-30 19:17 UTCEPSS rescoreEPSS 0.4% · 34th percentile
- 2026-08-30 01:22 UTCEPSS rescoreEPSS 0.4% · 34th percentile
- 2026-08-28 21:41 UTCEPSS rescoreEPSS 0.4% · 34th percentile
- 2026-08-27 14:25 UTCEPSS rescoreEPSS 0.4% · 34th percentile
- 2026-08-26 14:46 UTCEPSS rescoreEPSS 0.4% · 34th percentile
- 2026-08-25 13:49 UTCEPSS rescoreEPSS 0.4% · 34th percentile
- 2026-08-24 22:14 UTCEG score recompute
- 2026-08-23 15:13 UTCEG score recompute
- 2026-08-23 00:19 UTCEPSS rescoreEPSS 0.3% · 25th percentile
- 2026-08-22 15:07 UTCEG score recompute
- 2026-08-21 23:49 UTCEPSS rescoreEPSS 0.3% · 25th percentile
- 2026-08-21 07:56 UTCEG score recompute
- 2026-08-20 22:55 UTCEPSS rescoreEPSS 0.3% · 25th percentile
- 2026-08-20 07:50 UTCEG score recompute
- 2026-08-19 17:04 UTCEPSS rescoreEPSS 0.3% · 25th percentile
- 2026-08-19 04:51 UTCEG score recompute
- 2026-08-18 13:48 UTCEPSS rescoreEPSS 0.3% · 25th percentile
- 2026-08-17 13:47 UTCEPSS rescoreEPSS 0.3% · 25th percentile
- 2026-08-16 20:15 UTCEG score recompute
- 2026-08-16 14:56 UTCEPSS rescoreEPSS 0.3% · 25th percentile
- 2026-08-16 02:14 UTCEPSS rescoreEPSS 0.3% · 25th percentile
- 2026-08-15 19:13 UTCEG score recompute
- 2026-08-15 01:30 UTCEPSS rescoreEPSS 0.3% · 25th percentile
- 2026-08-14 19:06 UTCEG score recompute
- 2026-08-13 22:00 UTCEPSS rescoreEPSS 0.3% · 25th percentile
- 2026-08-12 18:52 UTCEG score recompute
- 2026-08-12 13:51 UTCEPSS rescoreEPSS 0.3% · 25th percentile
- 2026-08-11 18:46 UTCEG score recompute
- 2026-08-11 00:00 UTCEPSS rescoreEPSS 0.3% · 25th percentile
- 2026-08-09 18:02 UTCEG score recompute
- 2026-08-09 13:46 UTCEPSS rescoreEPSS 0.3% · 25th percentile
- 2026-08-08 17:56 UTCEG score recompute
- 2026-08-08 16:37 UTCEPSS rescoreEPSS 0.3% · 25th percentile
- 2026-08-07 17:49 UTCEG score recompute
- 2026-08-06 17:42 UTCEG score recompute
- 2026-08-06 13:46 UTCEPSS rescoreEPSS 0.3% · 25th percentile
- 2026-08-05 19:17 UTCEPSS rescoreEPSS 0.3% · 25th percentile
- 2026-08-04 15:16 UTCEG score recompute
- 2026-08-04 15:10 UTCEPSS rescoreEPSS 0.3% · 25th percentile
- 2026-08-04 10:38 UTCEPSS rescoreEPSS 0.3% · 25th percentile
- 2026-08-03 10:36 UTCEPSS rescoreEPSS 0.3% · 25th percentile
- 2026-08-02 09:22 UTCEG score recompute
- 2026-08-02 02:27 UTCEPSS rescoreEPSS 0.3% · 25th percentile
Related CVEs(same product + same CWE)
Same product
6 shownPackagist:paymenter/paymenter
Frequently asked(5)
What is CVE-2026-44583?
When was the CVE record for CVE-2026-44583 published?
Is CVE-2026-44583 actively exploited?
What is the CVSS score of CVE-2026-44583?
How do I remediate CVE-2026-44583?
Dependency Blast Radius
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