CVE-2026-103587

MEDIUMPre-NVD 5.45.4—
EchelonGraph scoreHIGH confidence

Score 5.4 from GitHub Security Advisory published 2026-10-01. A secondary CVSS source baseline 5.4; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 4 sources updated this weekElevated
5.4EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.2%CVSS: 5.4Exploit: Elevated riskExposed services: Not assessed

An upstream fix is merged but not yet released — mitigate (WAF / firewall / segmentation) until the release ships, then apply it.

QloApps through 1.7.0 contains a reflected cross-site scripting vulnerability in the back-office Hotel Reservation System Book Now search, where date_to and id_room_type parameters are copied into template variables without validation. Attackers can craft a malicious link containing JavaScript payload in these parameters that executes in an authenticated administrator's session when the victim follows the link.

CVSS v3
5.4
EG Score
5.4MEDIUMhigh confidence
EG Risk
40
EG Risk 40/100CISA SSVC

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity54% × 45%
Exploitation40% × 40%
Automatability0% × 15%
CISA SSVC: Track at low or medium mission impact; Track* at high (mission-essential systems).
Action: An upstream fix is merged but not yet in a tagged release. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines until it ships, then apply the release.
EPSS PROB
0.2%
EPSS %ILE
7th
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Track* at high (mission-essential systems).

An upstream fix is merged but not yet in a tagged release. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines until it ships, then apply the release.

Exploitation public PoC (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

September 30, 2026

Last Modified

October 1, 2026

Advisory Details (8)

Auto-updated Oct 1, 2026
Upstream fix merged — awaiting tagged release. Sources: github_pr, github_commit.
generic

QloApps through 1.7.0 Reflected XSS via Book Now Search Parameters | Advisories | VulnCheck

https://www.vulncheck.com/advisories/qloapps-through-1.7.0-reflected-xss-via-book-now-search-parameters
generic

GitHub - Qloapps/QloApps: QloApps is a Free and Open-source hotel management and reservation system to take a hotel business online. QloApps offers a Property Management System (PMS), a Booking Engine, and an attractive Hotel Website. Elevate hotel operations with QloApps to streamline processes and provide an enhanced experience for both hoteliers and guests. · GitHub

https://github.com/Qloapps/QloApps
generic

CVE-2026-103587, CVE-2026-103588, CVE-2026-103589, CVE-2026-103590 Reflected XSS in QloApps 1.7.0 - HackMD

https://hackmd.io/@leediay/four-reflected-xss-qloapps
generic

Reflected XSS via `date_to` in Booking Now function - HackMD

https://hackmd.io/@leediay/reflected-xss-qloapps-via-booking-now
generic

QloApps/modules/hotelreservationsystem/views/templates/admin/hotel_rooms_booking/helpers/view/_partials/booking-rooms.tpl at v1.7.0 · Qloapps/QloApps · GitHub

https://github.com/Qloapps/QloApps/blob/v1.7.0/modules/hotelreservationsystem/views/templates/admin/hotel_rooms_booking/helpers/view/_partials/booking-rooms.tpl
generic

QloApps/modules/hotelreservationsystem/controllers/admin/AdminHotelRoomsBookingController.php at v1.7.0 · Qloapps/QloApps · GitHub

https://github.com/Qloapps/QloApps/blob/v1.7.0/modules/hotelreservationsystem/controllers/admin/AdminHotelRoomsBookingController.php
github_commit

commit 1d06fd302a93 (Qloapps/QloApps)

Fix landed in Qloapps/QloApps commit 1d06fd302a93 — awaiting tagged release

https://github.com/Qloapps/QloApps/commit/1d06fd302a935d68203dbdb341d89482621769d7
github_pr

Fixed: Validate checkout date to be after check-in date in back office

Upstream fix in progress (PR #1884 · Qloapps/QloApps, state=open)

https://github.com/Qloapps/QloApps/pull/1884

Vendor Advisories for CVE-2026-103587(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 11× in last 7d / 11× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. 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. Most recent first.

  1. 2026-10-03 20:43 UTCEG score recompute
  2. 2026-10-03 20:43 UTCGHSA enrichment
  3. 2026-10-03 14:25 UTCEPSS rescore
  4. 2026-10-02 18:38 UTCEG score recompute
  5. 2026-10-02 18:38 UTCGHSA enrichment
  6. 2026-10-01 16:34 UTCEG score recompute
  7. 2026-10-01 16:34 UTCGHSA enrichment
  8. 2026-10-01 15:51 UTCEG score recompute
  9. 2026-10-01 15:51 UTCGHSA enrichment
  10. 2026-09-30 23:18 UTCEG score recompute
  11. 2026-09-30 23:15 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-103587?
CVE-2026-103587 is a medium vulnerability published on September 30, 2026. QloApps through 1.7.0 contains a reflected cross-site scripting vulnerability in the back-office Hotel Reservation System Book Now search, where dateto and idroom_type parameters are copied into template variables without validation. Attackers can craft a malicious link containing JavaScript…
When was CVE-2026-103587 disclosed?
CVE-2026-103587 was first published on September 30, 2026, with the most recent update on October 1, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-103587 actively exploited?
CVE-2026-103587 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.2% probability of exploitation in the next 30 days (7th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-103587?
CVE-2026-103587 has a CVSS base score of 5.4 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-103587?
An upstream fix for CVE-2026-103587 has been merged but is not yet in a tagged release. Until it ships, restrict network exposure of the affected system or apply the vendor's mitigation, then update to the release that contains the fix. The vendor advisories EchelonGraph has for CVE-2026-103587 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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