CVE-2023-26261

CRITICALNVD 9.89.8
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to NVD's CVSS score.

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2023-03-08. NVD baseline CVSS 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: EPSS, GitHub Security Advisory, NVD CVSS v3
9.8EG
EchelonGraph verdictPlan mitigationRemediate within your standard update timelines at low or medium mission impact and sooner than that at high (the SSVC decision on this page).
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.8%CVSS: 9.8Exploit: None knownExposed services: Not assessed

No fix is confirmed yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for the fix.

In UBIKA WAAP Gateway/Cloud through 6.10, a blind XPath injection leads to an authentication bypass by stealing the session of another connected user. The fixed versions are WAAP Gateway & Cloud 6.11.0 and 6.5.6-patch15.

CVSS v3
9.8
EG Score
9.8CRITICALmedium confidence
EG Risk
59
EG Risk 59/100

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 (value × EchelonGraph’s weight)
Severity98% × 45%
The EG Score, 9.8 of 10.
Exploitation0.8% × 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 total (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: No fix is confirmed yet. Restrict network exposure of the affected system within your standard update timelines at low or medium mission impact and sooner than that at high, and watch for a fix.
EPSS PROB
0.8%
EPSS %ILE
56th
KEV
Not listed

SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Attend at high (mission-essential systems).

No fix is confirmed yet. Restrict network exposure of the affected system within your standard update timelines at low or medium mission impact and sooner than that at high, and watch for a fix.

Exploitation none (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact total (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)3 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 total (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

March 8, 2023

Last Modified

March 5, 2025

Advisory Details (2)

Auto-updated Oct 10, 2026
No fix on record yet.
Web page

CVE-2023-26261 - WAAP Gateway/Cloud - Authentication bypass via blind XPath injection · GitHub

https://gist.github.com/Jakick/7d1635b886654ddd0e476b3c79a7ba9f
Web page
https://documentation.ubikasec.com/x/CQDAAw

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 8× in last 7d / 24× 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 84 of 167 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. 16 repeat rows among the latest 100 are merged into the row they repeat. The 83 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-11 21:57 UTCEG score recompute
  2. 2026-10-11 13:45 UTCEPSS rescoreEPSS 0.8% · 56th percentile
  3. 2026-10-10 19:57 UTCEPSS rescoreEPSS 0.8% · 56th percentile
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  11. 2026-10-01 19:47 UTCEPSS rescoreEPSS 0.8% · 56th percentile
  12. 2026-09-30 16:19 UTCEG score recompute
  13. 2026-09-30 15:01 UTCEPSS rescoreEPSS 0.8% · 56th percentile
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  1. 2026-09-11 09:34 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  2. 2026-09-08 21:57 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  3. 2026-09-07 15:59 UTCEPSS rescoreEPSS 0.8% · 55th percentile
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  26. 2026-08-13 21:58 UTCEPSS rescoreEPSS 0.8% · 54th percentile
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  47. 2026-07-23 02:20 UTCEG score recompute
  48. 2026-07-22 23:08 UTCEG score recompute
  49. 2026-07-22 14:06 UTCEPSS rescoreEPSS 0.8% · 54th percentile
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Frequently asked(5)

What is CVE-2023-26261?
CVE-2023-26261 is a critical-severity vulnerability; its CVE record was published on March 8, 2023. In UBIKA WAAP Gateway/Cloud through 6.10, a blind XPath injection leads to an authentication bypass by stealing the session of another connected user. The fixed versions are WAAP Gateway & Cloud 6.11.0 and 6.5.6-patch15.
When was the CVE record for CVE-2023-26261 published?
The CVE record for CVE-2023-26261 was published on March 8, 2023. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of March 5, 2025; the record at its source may have been updated since.
Is CVE-2023-26261 actively exploited?
CVE-2023-26261 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.8% probability of exploitation in the next 30 days (56th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2023-26261?
CVE-2023-26261 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2023-26261?
No fix for CVE-2023-26261 is confirmed yet. Until one is published, restrict network exposure of the affected system — for example, keep it off the internet or limit it to trusted networks — and watch for a fix.

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